23212199 has 2 divisors, whose sum is σ = 23212200. Its totient is φ = 23212198.

The previous prime is 23212187. The next prime is 23212207. The reversal of 23212199 is 99121232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23212199 - 2²⁰ = 22163623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23212139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606099 + 11606100.

It is an arithmetic number, because the mean of its divisors is an integer number (11606100).

Almost surely, 2^23212199 is an apocalyptic number.

23212199 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212199 is an equidigital number, since it uses as much as digits as its factorization.

23212199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 23212199 is about 4817.9040048552. The cubic root of 23212199 is about 285.2586100381.

The spelling of 23212199 in words is "twenty-three million, two hundred twelve thousand, one hundred ninety-nine".