231122221132 has 48 divisors (see below), whose sum is σ = 467237594880. Its totient is φ = 98930289600.

The previous prime is 231122221117. The next prime is 231122221139.

231122221132 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×231122221132² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (231122221139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688119 + ... + 967342.

It is an arithmetic number, because the mean of its divisors is an integer number (9734116560).

Almost surely, 2^231122221132 is an apocalyptic number.

231122221132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231122221132 is an abundant number, since it is smaller than the sum of its proper divisors (236115373748).

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

231122221132 is a wasteful number, since it uses less digits than its factorization.

231122221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655662 (or 1655660 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

It can be divided in two parts, 231122 and 221132, that added together give a palindrome (452254).

The spelling of 231122221132 in words is "two hundred thirty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred thirty-two".