220972922 has 8 divisors (see below), whose sum is σ = 332443956. Its totient is φ = 110158272.

The previous prime is 220972859. The next prime is 220972931. The reversal of 220972922 is 229279022.

It can be written as a sum of positive squares in 2 ways, for example, as 175801081 + 45171841 = 13259^2 + 6721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163253 + ... + 164600.

Almost surely, 2^220972922 is an apocalyptic number.

220972922 is a deficient number, since it is larger than the sum of its proper divisors (111471034).

220972922 is a wasteful number, since it uses less digits than its factorization.

220972922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328192.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 220972922 is about 14865.1579877242. The cubic root of 220972922 is about 604.5696659742.

The spelling of 220972922 in words is "two hundred twenty million, nine hundred seventy-two thousand, nine hundred twenty-two".