422217081 has 24 divisors (see below), whose sum is σ = 716491776. Its totient is φ = 236204640.

The previous prime is 422217073. The next prime is 422217091. The reversal of 422217081 is 180712224.

It is not a de Polignac number, because 422217081 - 2³ = 422217073 is a prime.

It is a super-2 number, since 2×422217081² = 356534526976321122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422217011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162745 + ... + 165318.

It is an arithmetic number, because the mean of its divisors is an integer number (29853824).

Almost surely, 2^422217081 is an apocalyptic number.

It is an amenable number.

422217081 is a deficient number, since it is larger than the sum of its proper divisors (294274695).

422217081 is a wasteful number, since it uses less digits than its factorization.

422217081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328093 (or 328090 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 422217081 is about 20547.9215737261. The cubic root of 422217081 is about 750.2026599004.

The spelling of 422217081 in words is "four hundred twenty-two million, two hundred seventeen thousand, eighty-one".