22121660969 has 2 divisors, whose sum is σ = 22121660970. Its totient is φ = 22121660968.

The previous prime is 22121660959. The next prime is 22121661011. The reversal of 22121660969 is 96906612122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16677139600 + 5444521369 = 129140^2 + 73787^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121660969 - 2⁸ = 22121660713 is a prime.

It is a super-2 number, since 2×22121660969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22121660959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060830484 + 11060830485.

It is an arithmetic number, because the mean of its divisors is an integer number (11060830485).

Almost surely, 2^22121660969 is an apocalyptic number.

It is an amenable number.

22121660969 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121660969 is an equidigital number, since it uses as much as digits as its factorization.

22121660969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 22121660969 in words is "twenty-two billion, one hundred twenty-one million, six hundred sixty thousand, nine hundred sixty-nine".