22012121939 has 2 divisors, whose sum is σ = 22012121940. Its totient is φ = 22012121938.

The previous prime is 22012121909. The next prime is 22012122007. The reversal of 22012121939 is 93912121022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22012121939 - 2¹⁶ = 22012056403 is a prime.

It is not a weakly prime, because it can be changed into another prime (22012121909) 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, 11006060969 + 11006060970.

It is an arithmetic number, because the mean of its divisors is an integer number (11006060970).

Almost surely, 2^22012121939 is an apocalyptic number.

22012121939 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012121939 is an equidigital number, since it uses as much as digits as its factorization.

22012121939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 22012121939 in words is "twenty-two billion, twelve million, one hundred twenty-one thousand, nine hundred thirty-nine".