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212021121310 = 2531897684709
BaseRepresentation
bin1100010101110101110…
…0011001000100011110
3202021021010010220211121
43011131130121010132
511433204401340220
6241222352241154
721214036536625
oct3053534310436
9667233126747
10212021121310
1181a104395a9
12351115401ba
1316cbb96a5cb
14a39483a6bc
1557ad9b7eaa
hex315d71911e

212021121310 has 32 divisors (see below), whose sum is σ = 398375366400. Its totient is φ = 81150516480.

The previous prime is 212021121281. The next prime is 212021121311. The reversal of 212021121310 is 13121120212.

Adding to 212021121310 its reverse (13121120212), we get a palindrome (225142241522).

212021121310 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2120211213102 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3814765 + ... + 3869944.

It is an arithmetic number, because the mean of its divisors is an integer number (12449230200).

Almost surely, 2212021121310 is an apocalyptic number.

212021121310 is a deficient number, since it is larger than the sum of its proper divisors (186354245090).

212021121310 is a wasteful number, since it uses less digits than its factorization.

212021121310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684836.

The product of its (nonzero) digits is 48, while the sum is 16.

The spelling of 212021121310 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, three hundred ten".

Divisors: 1 2 5 10 31 62 89 155 178 310 445 890 2759 5518 13795 27590 7684709 15369418 38423545 76847090 238225979 476451958 683939101 1191129895 1367878202 2382259790 3419695505 6839391010 21202112131 42404224262 106010560655 212021121310