121102131312 has 60 divisors (see below), whose sum is σ = 348077725320. Its totient is φ = 39276365184.

The previous prime is 121102131287. The next prime is 121102131341. The reversal of 121102131312 is 213131201121.

121102131312 is a `hidden beast` number, since 121 + 102 + 131 + 312 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11359362 + ... + 11370017.

It is an arithmetic number, because the mean of its divisors is an integer number (5801295422).

Almost surely, 2^121102131312 is an apocalyptic number.

121102131312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121102131312 is an abundant number, since it is smaller than the sum of its proper divisors (226975594008).

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

121102131312 is a wasteful number, since it uses less digits than its factorization.

121102131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22729430 (or 22729421 counting only the distinct ones).

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

Adding to 121102131312 its reverse (213131201121), we get a palindrome (334233332433).

The spelling of 121102131312 in words is "one hundred twenty-one billion, one hundred two million, one hundred thirty-one thousand, three hundred twelve".