231421012122 has 16 divisors (see below), whose sum is σ = 462871642752. Its totient is φ = 77135400960.

The previous prime is 231421012091. The next prime is 231421012157. The reversal of 231421012122 is 221210124132.

It is a happy 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, 1131879 + ... + 1320602.

It is an arithmetic number, because the mean of its divisors is an integer number (28929477672).

Almost surely, 2^231421012122 is an apocalyptic number.

231421012122 is an abundant number, since it is smaller than the sum of its proper divisors (231450630630).

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

231421012122 is a wasteful number, since it uses less digits than its factorization.

231421012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468213.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 231421012122 its reverse (221210124132), we get a palindrome (452631136254).

The spelling of 231421012122 in words is "two hundred thirty-one billion, four hundred twenty-one million, twelve thousand, one hundred twenty-two".