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120202212220 = 225231811443697
BaseRepresentation
bin110111111110010011…
…1000011001101111100
3102111021002200001111221
41233330213003031330
53432133231242340
6131115314323124
711453502642256
oct1577447031574
9374232601457
10120202212220
1146a83019162
121b3675894a4
13b44806757c
145b64142cd6
1531d7aea44a
hex1bfc9c337c

120202212220 has 48 divisors (see below), whose sum is σ = 264855060288. Its totient is φ = 45736289280.

The previous prime is 120202212203. The next prime is 120202212253. The reversal of 120202212220 is 22212202021.

It is a junction number, because it is equal to n+sod(n) for n = 120202212194 and 120202212203.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 638589 + ... + 805108.

It is an arithmetic number, because the mean of its divisors is an integer number (5517813756).

Almost surely, 2120202212220 is an apocalyptic number.

120202212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120202212220 is an abundant number, since it is smaller than the sum of its proper divisors (144652848068).

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

120202212220 is a wasteful number, since it uses less digits than its factorization.

120202212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443910 (or 1443908 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 120202212220 its reverse (22212202021), we get a palindrome (142414414241).

The spelling of 120202212220 in words is "one hundred twenty billion, two hundred two million, two hundred twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 23 46 92 115 181 230 362 460 724 905 1810 3620 4163 8326 16652 20815 41630 83260 1443697 2887394 5774788 7218485 14436970 28873940 33205031 66410062 132820124 166025155 261309157 332050310 522618314 664100620 1045236628 1306545785 2613091570 5226183140 6010110611 12020221222 24040442444 30050553055 60101106110 120202212220