22101131232 has 60 divisors (see below), whose sum is σ = 64998820656. Its totient is φ = 7367042880.

The previous prime is 22101131219. The next prime is 22101131237. The reversal of 22101131232 is 23213110122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101131237) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4260744 + ... + 4265927.

Almost surely, 2^22101131232 is an apocalyptic number.

It is an amenable number.

22101131232 is an abundant number, since it is smaller than the sum of its proper divisors (42897689424).

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

22101131232 is an equidigital number, since it uses as much as digits as its factorization.

22101131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526693 (or 8526676 counting only the distinct ones).

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

Adding to 22101131232 its reverse (23213110122), we get a palindrome (45314241354).

The spelling of 22101131232 in words is "twenty-two billion, one hundred one million, one hundred thirty-one thousand, two hundred thirty-two".