231440022122 has 16 divisors (see below), whose sum is σ = 360621261000. Its totient is φ = 111266050560.

The previous prime is 231440022113. The next prime is 231440022169. The reversal of 231440022122 is 221220044132.

It can be written as a sum of positive squares in 4 ways, for example, as 231217684201 + 222337921 = 480851^2 + 14911^2 .

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, 8264747 + ... + 8292702.

Almost surely, 2^231440022122 is an apocalyptic number.

231440022122 is a deficient number, since it is larger than the sum of its proper divisors (129181238878).

231440022122 is a wasteful number, since it uses less digits than its factorization.

231440022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16557721.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 231440022122 its reverse (221220044132), we get a palindrome (452660066254).

The spelling of 231440022122 in words is "two hundred thirty-one billion, four hundred forty million, twenty-two thousand, one hundred twenty-two".