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1213222341210 = 2351141531691869
BaseRepresentation
bin10001101001111001101…
…011111100101001011010
311021222112112212122020120
4101221321223330221122
5124334134404404320
62325202513134110
7153436531514535
oct21517153745132
94258475778216
101213222341210
11428585423810
1217716985a336
138a538a66949
1442a1260da1c
152185a90b440
hex11a79afca5a

1213222341210 has 128 divisors (see below), whose sum is σ = 3315307242240. Its totient is φ = 281526835200.

The previous prime is 1213222341197. The next prime is 1213222341223. The reversal of 1213222341210 is 121432223121.

It is an interprime number because it is at equal distance from previous prime (1213222341197) and next prime (1213222341223).

It is a super-2 number, since 2×12132223412102 (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128845 + ... + 1563024.

It is an arithmetic number, because the mean of its divisors is an integer number (25900837830).

Almost surely, 21213222341210 is an apocalyptic number.

1213222341210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213222341210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1657653621120).

1213222341210 is an abundant number, since it is smaller than the sum of its proper divisors (2102084901030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213222341210 is a wasteful number, since it uses less digits than its factorization.

1213222341210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691984.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1213222341210 its reverse (121432223121), we get a palindrome (1334654564331).

The spelling of 1213222341210 in words is "one trillion, two hundred thirteen billion, two hundred twenty-two million, three hundred forty-one thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 41 53 55 66 82 106 110 123 159 165 205 246 265 318 330 410 451 530 583 615 795 902 1166 1230 1353 1590 1749 2173 2255 2706 2915 3498 4346 4510 5830 6519 6765 8745 10865 13038 13530 17490 21730 23903 32595 47806 65190 71709 119515 143418 239030 358545 717090 1691869 3383738 5075607 8459345 10151214 16918690 18610559 25378035 37221118 50756070 55831677 69366629 89669057 93052795 111663354 138733258 179338114 186105590 208099887 269007171 279158385 346833145 416199774 448345285 538014342 558316770 693666290 763032919 896690570 986359627 1040499435 1345035855 1526065838 1972719254 2080998870 2289098757 2690071710 2959078881 3676431337 3815164595 4578197514 4931798135 5918157762 7352862674 7630329190 9863596270 11029294011 11445493785 14795394405 18382156685 22058588022 22890987570 29590788810 36764313370 40440744707 55146470055 80881489414 110292940110 121322234121 202203723535 242644468242 404407447070 606611170605 1213222341210