121313212112 has 40 divisors (see below), whose sum is σ = 243161202312. Its totient is φ = 58591232000.

The previous prime is 121313212103. The next prime is 121313212129. The reversal of 121313212112 is 211212313121.

121313212112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 55179889216 + 66133322896 = 234904^2 + 257164^2 .

It is a super-2 number, since 2×121313212112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849233 + ... + 981744.

Almost surely, 2^121313212112 is an apocalyptic number.

It is an amenable number.

121313212112 is an abundant number, since it is smaller than the sum of its proper divisors (121847990200).

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

121313212112 is a wasteful number, since it uses less digits than its factorization.

121313212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831127 (or 1831121 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 121313212112 its reverse (211212313121), we get a palindrome (332525525233).

The spelling of 121313212112 in words is "one hundred twenty-one billion, three hundred thirteen million, two hundred twelve thousand, one hundred twelve".