22997111 has 2 divisors, whose sum is σ = 22997112. Its totient is φ = 22997110.

The previous prime is 22997077. The next prime is 22997153. The reversal of 22997111 is 11179922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22997111 - 2⁶ = 22997047 is a prime.

It is a super-2 number, since 2×22997111² = 1057734228692642, 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 (22997911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11498555 + 11498556.

It is an arithmetic number, because the mean of its divisors is an integer number (11498556).

Almost surely, 2^22997111 is an apocalyptic number.

22997111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22997111 is an equidigital number, since it uses as much as digits as its factorization.

22997111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 32.

The square root of 22997111 is about 4795.5303147827. The cubic root of 22997111 is about 284.3747903392.

The spelling of 22997111 in words is "twenty-two million, nine hundred ninety-seven thousand, one hundred eleven".