21224560032 has 96 divisors (see below), whose sum is σ = 66666922560. Its totient is φ = 6530630400.

The previous prime is 21224560031. The next prime is 21224560051. The reversal of 21224560032 is 23006542212.

It is a happy number.

21224560032 is a `hidden beast` number, since 2 + 1 + 2 + 24 + 5 + 600 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21224559978 and 21224560005.

It is not an unprimeable number, because it can be changed into a prime (21224560031) 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, 933594 + ... + 956057.

It is an arithmetic number, because the mean of its divisors is an integer number (694447110).

Almost surely, 2^21224560032 is an apocalyptic number.

It is an amenable number.

21224560032 is an abundant number, since it is smaller than the sum of its proper divisors (45442362528).

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

21224560032 is a wasteful number, since it uses less digits than its factorization.

21224560032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889683 (or 1889669 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 21224560032 in words is "twenty-one billion, two hundred twenty-four million, five hundred sixty thousand, thirty-two".