22121113291 has 2 divisors, whose sum is σ = 22121113292. Its totient is φ = 22121113290.

The previous prime is 22121113283. The next prime is 22121113307. The reversal of 22121113291 is 19231112122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121113291 - 2³ = 22121113283 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121116291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060556645 + 11060556646.

It is an arithmetic number, because the mean of its divisors is an integer number (11060556646).

Almost surely, 2^22121113291 is an apocalyptic number.

22121113291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121113291 is an equidigital number, since it uses as much as digits as its factorization.

22121113291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The spelling of 22121113291 in words is "twenty-two billion, one hundred twenty-one million, one hundred thirteen thousand, two hundred ninety-one".