122481811921 has 32 divisors (see below), whose sum is σ = 145500143616. Its totient is φ = 100892736000.

The previous prime is 122481811913. The next prime is 122481811943. The reversal of 122481811921 is 129118184221.

It is not a de Polignac number, because 122481811921 - 2³ = 122481811913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122481811961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27891636 + ... + 27896026.

It is an arithmetic number, because the mean of its divisors is an integer number (4546879488).

Almost surely, 2^122481811921 is an apocalyptic number.

It is an amenable number.

122481811921 is a deficient number, since it is larger than the sum of its proper divisors (23018331695).

122481811921 is a wasteful number, since it uses less digits than its factorization.

122481811921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293.

The product of its digits is 18432, while the sum is 40.

The spelling of 122481811921 in words is "one hundred twenty-two billion, four hundred eighty-one million, eight hundred eleven thousand, nine hundred twenty-one".