122405231388 has 24 divisors (see below), whose sum is σ = 311576952960. Its totient is φ = 37092494320.

The previous prime is 122405231387. The next prime is 122405231413. The reversal of 122405231388 is 883132504221.

It is a super-2 number, since 2×122405231388² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122405231387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463656048 + ... + 463656311.

It is an arithmetic number, because the mean of its divisors is an integer number (12982373040).

Almost surely, 2^122405231388 is an apocalyptic number.

It is an amenable number.

122405231388 is an abundant number, since it is smaller than the sum of its proper divisors (189171721572).

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

122405231388 is a wasteful number, since it uses less digits than its factorization.

122405231388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927312377 (or 927312375 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 122405231388 in words is "one hundred twenty-two billion, four hundred five million, two hundred thirty-one thousand, three hundred eighty-eight".