22166899 has 2 divisors, whose sum is σ = 22166900. Its totient is φ = 22166898.

The previous prime is 22166843. The next prime is 22166923. The reversal of 22166899 is 99866122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22166899 is a prime.

It is a super-2 number, since 2×22166899² = 982742822552402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22166819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11083449 + 11083450.

It is an arithmetic number, because the mean of its divisors is an integer number (11083450).

Almost surely, 2^22166899 is an apocalyptic number.

22166899 is a deficient number, since it is larger than the sum of its proper divisors (1).

22166899 is an equidigital number, since it uses as much as digits as its factorization.

22166899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 22166899 is about 4708.1736374097. The cubic root of 22166899 is about 280.9107208257.

The spelling of 22166899 in words is "twenty-two million, one hundred sixty-six thousand, eight hundred ninety-nine".