221152432 has 20 divisors (see below), whose sum is σ = 430084080. Its totient is φ = 110163008.

The previous prime is 221152427. The next prime is 221152447. The reversal of 221152432 is 234251122.

It is a happy 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, 21388 + ... + 29995.

It is an arithmetic number, because the mean of its divisors is an integer number (21504204).

Almost surely, 2^221152432 is an apocalyptic number.

It is an amenable number.

221152432 is a deficient number, since it is larger than the sum of its proper divisors (208931648).

221152432 is a wasteful number, since it uses less digits than its factorization.

221152432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51660 (or 51654 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 221152432 is about 14871.1947065459. The cubic root of 221152432 is about 604.7333314669.

The spelling of 221152432 in words is "two hundred twenty-one million, one hundred fifty-two thousand, four hundred thirty-two".