22129279472 has 20 divisors (see below), whose sum is σ = 43276187736. Its totient is φ = 10961231040.

The previous prime is 22129279433. The next prime is 22129279489. The reversal of 22129279472 is 27497292122.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6461279 + ... + 6464702.

Almost surely, 2^22129279472 is an apocalyptic number.

It is an amenable number.

22129279472 is a deficient number, since it is larger than the sum of its proper divisors (21146908264).

22129279472 is a wasteful number, since it uses less digits than its factorization.

22129279472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926096 (or 12926090 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The spelling of 22129279472 in words is "twenty-two billion, one hundred twenty-nine million, two hundred seventy-nine thousand, four hundred seventy-two".