121842113892 has 48 divisors (see below), whose sum is σ = 286276636800. Its totient is φ = 40331548672.

The previous prime is 121842113867. The next prime is 121842113893. The reversal of 121842113892 is 298311248121.

121842113892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (121842113893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12469993 + ... + 12479759.

It is an arithmetic number, because the mean of its divisors is an integer number (5964096600).

Almost surely, 2^121842113892 is an apocalyptic number.

121842113892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121842113892 is an abundant number, since it is smaller than the sum of its proper divisors (164434522908).

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

121842113892 is a wasteful number, since it uses less digits than its factorization.

121842113892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16900 (or 16898 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The spelling of 121842113892 in words is "one hundred twenty-one billion, eight hundred forty-two million, one hundred thirteen thousand, eight hundred ninety-two".