22131231332 has 48 divisors (see below), whose sum is σ = 45843504000. Its totient is φ = 9146801664.

The previous prime is 22131231313. The next prime is 22131231341. The reversal of 22131231332 is 23313213122.

It is a junction number, because it is equal to n+sod(n) for n = 22131231298 and 22131231307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681644 + ... + 713372.

It is an arithmetic number, because the mean of its divisors is an integer number (955073000).

Almost surely, 2^22131231332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22131231332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22921752000).

22131231332 is an abundant number, since it is smaller than the sum of its proper divisors (23712272668).

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

22131231332 is a wasteful number, since it uses less digits than its factorization.

22131231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32628 (or 32626 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

Adding to 22131231332 its reverse (23313213122), we get a palindrome (45444444454).

The spelling of 22131231332 in words is "twenty-two billion, one hundred thirty-one million, two hundred thirty-one thousand, three hundred thirty-two".