22201939 has 2 divisors, whose sum is σ = 22201940. Its totient is φ = 22201938.

The previous prime is 22201931. The next prime is 22201943. The reversal of 22201939 is 93910222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22201939 - 2³ = 22201931 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22201931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100969 + 11100970.

It is an arithmetic number, because the mean of its divisors is an integer number (11100970).

Almost surely, 2^22201939 is an apocalyptic number.

22201939 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201939 is an equidigital number, since it uses as much as digits as its factorization.

22201939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 22201939 is about 4711.8933561786. The cubic root of 22201939 is about 281.0586580685.

The spelling of 22201939 in words is "twenty-two million, two hundred one thousand, nine hundred thirty-nine".