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120102211212 = 223471371554359
BaseRepresentation
bin110111111011010100…
…1100100111010001100
3102111000010111110220220
41233312221210322030
53431432131224322
6131101343111340
711451146644164
oct1576651447214
9374003443826
10120102211212
1146a316269a5
121b339ba2550
13b430423489
145b54b515a4
1531cde4555c
hex1bf6a64e8c

120102211212 has 48 divisors (see below), whose sum is σ = 288290257920. Its totient is φ = 38896254592.

The previous prime is 120102211189. The next prime is 120102211213. The reversal of 120102211212 is 212112201021.

It is a super-2 number, since 2×1201022112122 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120102211191 and 120102211200.

It is not an unprimeable number, because it can be changed into a prime (120102211213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699912 + ... + 854447.

It is an arithmetic number, because the mean of its divisors is an integer number (6006047040).

Almost surely, 2120102211212 is an apocalyptic number.

120102211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120102211212 is an abundant number, since it is smaller than the sum of its proper divisors (168188046708).

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

120102211212 is a wasteful number, since it uses less digits than its factorization.

120102211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554550 (or 1554548 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120102211212 its reverse (212112201021), we get a palindrome (332214412233).

It can be divided in two parts, 12010 and 2211212, that added together give a palindrome (2223222).

The spelling of 120102211212 in words is "one hundred twenty billion, one hundred two million, two hundred eleven thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 47 94 137 141 188 274 282 411 548 564 822 1644 6439 12878 19317 25756 38634 77268 1554359 3108718 4663077 6217436 9326154 18652308 73054873 146109746 212947183 219164619 292219492 425894366 438329238 638841549 851788732 876658476 1277683098 2555366196 10008517601 20017035202 30025552803 40034070404 60051105606 120102211212