121438271922 has 48 divisors (see below), whose sum is σ = 276169158720. Its totient is φ = 35530522720.

The previous prime is 121438271921. The next prime is 121438271939. The reversal of 121438271922 is 229172834121.

It is a super-2 number, since 2×121438271922² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121438271921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2862918 + ... + 2905025.

It is an arithmetic number, because the mean of its divisors is an integer number (5753524140).

Almost surely, 2^121438271922 is an apocalyptic number.

121438271922 is an abundant number, since it is smaller than the sum of its proper divisors (154730886798).

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

121438271922 is a wasteful number, since it uses less digits than its factorization.

121438271922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767999 (or 5767988 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The spelling of 121438271922 in words is "one hundred twenty-one billion, four hundred thirty-eight million, two hundred seventy-one thousand, nine hundred twenty-two".