220932191 has 4 divisors (see below), whose sum is σ = 224043984. Its totient is φ = 217820400.

The previous prime is 220932169. The next prime is 220932193. The reversal of 220932191 is 191239022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220932191 - 2²² = 216737887 is a prime.

It is a super-2 number, since 2×220932191² = 97622066040120962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220932193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555790 + ... + 1555931.

It is an arithmetic number, because the mean of its divisors is an integer number (56010996).

Almost surely, 2^220932191 is an apocalyptic number.

220932191 is a deficient number, since it is larger than the sum of its proper divisors (3111793).

220932191 is an equidigital number, since it uses as much as digits as its factorization.

220932191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111792.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 220932191 is about 14863.7879088744. The cubic root of 220932191 is about 604.5325177722.

The spelling of 220932191 in words is "two hundred twenty million, nine hundred thirty-two thousand, one hundred ninety-one".