22199251 has 2 divisors, whose sum is σ = 22199252. Its totient is φ = 22199250.

The previous prime is 22199231. The next prime is 22199291. The reversal of 22199251 is 15299122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22199251 - 2⁹ = 22198739 is a prime.

It is a super-2 number, since 2×22199251² = 985613489922002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22199231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11099625 + 11099626.

It is an arithmetic number, because the mean of its divisors is an integer number (11099626).

Almost surely, 2^22199251 is an apocalyptic number.

22199251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22199251 is an equidigital number, since it uses as much as digits as its factorization.

22199251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 22199251 is about 4711.6081118871. The cubic root of 22199251 is about 281.0473149726.

The spelling of 22199251 in words is "twenty-two million, one hundred ninety-nine thousand, two hundred fifty-one".