22155299 has 2 divisors, whose sum is σ = 22155300. Its totient is φ = 22155298.

The previous prime is 22155253. The next prime is 22155317. The reversal of 22155299 is 99255122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22155299 - 2¹² = 22151203 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22155209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077649 + 11077650.

It is an arithmetic number, because the mean of its divisors is an integer number (11077650).

Almost surely, 2^22155299 is an apocalyptic number.

22155299 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155299 is an equidigital number, since it uses as much as digits as its factorization.

22155299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 35.

The square root of 22155299 is about 4706.9415760130. The cubic root of 22155299 is about 280.8617118216.

The spelling of 22155299 in words is "twenty-two million, one hundred fifty-five thousand, two hundred ninety-nine".