121210021112312 has 48 divisors (see below), whose sum is σ = 249809313175800. Its totient is φ = 55095139915200.

The previous prime is 121210021112269. The next prime is 121210021112357. The reversal of 121210021112312 is 213211120012121.

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 11 ways as a sum of consecutive naturals, for example, 257077262 + ... + 257548322.

Almost surely, 2^{121210021112312} is an apocalyptic number.

It is an amenable number.

121210021112312 is an abundant number, since it is smaller than the sum of its proper divisors (128599292063488).

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

121210021112312 is a wasteful number, since it uses less digits than its factorization.

121210021112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736908 (or 736893 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 121210021112312 its reverse (213211120012121), we get a palindrome (334421141124433).

The spelling of 121210021112312 in words is "one hundred twenty-one trillion, two hundred ten billion, twenty-one million, one hundred twelve thousand, three hundred twelve".