113212121310 has 40 divisors (see below), whose sum is σ = 304414817256. Its totient is φ = 30189898800.

The previous prime is 113212121293. The next prime is 113212121311. The reversal of 113212121310 is 13121212311.

113212121310 is a `hidden beast` number, since 1 + 1 + 321 + 212 + 131 + 0 = 666.

It is a super-2 number, since 2×113212121310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113212121311) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69883216 + ... + 69884835.

Almost surely, 2^113212121310 is an apocalyptic number.

113212121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

113212121310 is an abundant number, since it is smaller than the sum of its proper divisors (191202695946).

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

113212121310 is a wasteful number, since it uses less digits than its factorization.

113212121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139768070 (or 139768061 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 113212121310 its reverse (13121212311), we get a palindrome (126333333621).

The spelling of 113212121310 in words is "one hundred thirteen billion, two hundred twelve million, one hundred twenty-one thousand, three hundred ten".