22722971 has 4 divisors (see below), whose sum is σ = 22732512. Its totient is φ = 22713432.

The previous prime is 22722961. The next prime is 22722991. The reversal of 22722971 is 17922722.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22722971 - 2¹⁰ = 22721947 is a prime.

It is a super-2 number, since 2×22722971² = 1032666822133682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22722961) 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, 2126 + ... + 7068.

It is an arithmetic number, because the mean of its divisors is an integer number (5683128).

Almost surely, 2^22722971 is an apocalyptic number.

22722971 is a deficient number, since it is larger than the sum of its proper divisors (9541).

22722971 is an equidigital number, since it uses as much as digits as its factorization.

22722971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540.

The product of its digits is 7056, while the sum is 32.

The square root of 22722971 is about 4766.8617559145. The cubic root of 22722971 is about 283.2402950194.

The spelling of 22722971 in words is "twenty-two million, seven hundred twenty-two thousand, nine hundred seventy-one".