220972132 has 12 divisors (see below), whose sum is σ = 403514496. Its totient is φ = 105682280.

The previous prime is 220972127. The next prime is 220972133. The reversal of 220972132 is 231279022.

It is a self number, because there is not a number n which added to its sum of digits gives 220972132.

It is not an unprimeable number, because it can be changed into a prime (220972133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200844 + ... + 1201027.

It is an arithmetic number, because the mean of its divisors is an integer number (33626208).

Almost surely, 2^220972132 is an apocalyptic number.

It is an amenable number.

220972132 is a deficient number, since it is larger than the sum of its proper divisors (182542364).

220972132 is a wasteful number, since it uses less digits than its factorization.

220972132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401898 (or 2401896 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 220972132 is about 14865.1314154971. The cubic root of 220972132 is about 604.5689455079.

The spelling of 220972132 in words is "two hundred twenty million, nine hundred seventy-two thousand, one hundred thirty-two".