220822631 has 2 divisors, whose sum is σ = 220822632. Its totient is φ = 220822630.

The previous prime is 220822607. The next prime is 220822643. The reversal of 220822631 is 136228022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220822631 - 2¹⁰ = 220821607 is a prime.

It is a super-2 number, since 2×220822631² = 97525268723524322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220822631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220822601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110411315 + 110411316.

It is an arithmetic number, because the mean of its divisors is an integer number (110411316).

Almost surely, 2^220822631 is an apocalyptic number.

220822631 is a deficient number, since it is larger than the sum of its proper divisors (1).

220822631 is an equidigital number, since it uses as much as digits as its factorization.

220822631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 220822631 is about 14860.1019848452. The cubic root of 220822631 is about 604.4325722737.

The spelling of 220822631 in words is "two hundred twenty million, eight hundred twenty-two thousand, six hundred thirty-one".