220911151 has 2 divisors, whose sum is σ = 220911152. Its totient is φ = 220911150.

The previous prime is 220911137. The next prime is 220911161. The reversal of 220911151 is 151119022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220911151 is a prime.

It is a super-2 number, since 2×220911151² = 97603473272289602, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220911121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110455575 + 110455576.

It is an arithmetic number, because the mean of its divisors is an integer number (110455576).

Almost surely, 2^220911151 is an apocalyptic number.

220911151 is a deficient number, since it is larger than the sum of its proper divisors (1).

220911151 is an equidigital number, since it uses as much as digits as its factorization.

220911151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 220911151 is about 14863.0801316551. The cubic root of 220911151 is about 604.5133267135.

The spelling of 220911151 in words is "two hundred twenty million, nine hundred eleven thousand, one hundred fifty-one".