22201999 has 2 divisors, whose sum is σ = 22202000. Its totient is φ = 22201998.

The previous prime is 22201967. The next prime is 22202021. The reversal of 22201999 is 99910222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22201999 - 2⁵ = 22201967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100999 + 11101000.

It is an arithmetic number, because the mean of its divisors is an integer number (11101000).

Almost surely, 2^22201999 is an apocalyptic number.

22201999 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201999 is an equidigital number, since it uses as much as digits as its factorization.

22201999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 22201999 is about 4711.8997230417. The cubic root of 22201999 is about 281.0589112521.

The spelling of 22201999 in words is "twenty-two million, two hundred one thousand, nine hundred ninety-nine".