231122012130 has 24 divisors (see below), whose sum is σ = 600917231772. Its totient is φ = 61632536544.

The previous prime is 231122012119. The next prime is 231122012131. The reversal of 231122012130 is 31210221132.

231122012130 is a `hidden beast` number, since 2 + 311 + 220 + 1 + 2 + 130 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 212759865081 + 18362147049 = 461259^2 + 135507^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (231122012131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1284011089 + ... + 1284011268.

Almost surely, 2^231122012130 is an apocalyptic number.

231122012130 is an abundant number, since it is smaller than the sum of its proper divisors (369795219642).

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

231122012130 is a wasteful number, since it uses less digits than its factorization.

231122012130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568022370 (or 2568022367 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231122012130 its reverse (31210221132), we get a palindrome (262332233262).

The spelling of 231122012130 in words is "two hundred thirty-one billion, one hundred twenty-two million, twelve thousand, one hundred thirty".