22122211012009 has 2 divisors, whose sum is σ = 22122211012010. Its totient is φ = 22122211012008.

The previous prime is 22122211011991. The next prime is 22122211012063. The reversal of 22122211012009 is 90021011222122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13458919449600 + 8663291562409 = 3668640^2 + 2943347^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122211012009 - 2⁵ = 22122211011977 is a prime.

It is not a weakly prime, because it can be changed into another prime (22122211012409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061105506004 + 11061105506005.

It is an arithmetic number, because the mean of its divisors is an integer number (11061105506005).

Almost surely, 2^{22122211012009} is an apocalyptic number.

It is an amenable number.

22122211012009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122211012009 is an equidigital number, since it uses as much as digits as its factorization.

22122211012009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 22122211012009 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred eleven million, twelve thousand, nine".