121642115412 has 24 divisors (see below), whose sum is σ = 283972378816. Its totient is φ = 40527260928.

The previous prime is 121642115393. The next prime is 121642115453. The reversal of 121642115412 is 214511246121.

121642115412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 121642115412.

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, 2488648 + ... + 2537055.

Almost surely, 2^121642115412 is an apocalyptic number.

121642115412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121642115412 is an abundant number, since it is smaller than the sum of its proper divisors (162330263404).

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

121642115412 is a wasteful number, since it uses less digits than its factorization.

121642115412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027727 (or 5027725 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The spelling of 121642115412 in words is "one hundred twenty-one billion, six hundred forty-two million, one hundred fifteen thousand, four hundred twelve".