22121112012091 has 2 divisors, whose sum is σ = 22121112012092. Its totient is φ = 22121112012090.

The previous prime is 22121112012079. The next prime is 22121112012121. The reversal of 22121112012091 is 19021021112122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121112012091 - 2²⁵ = 22121078457659 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121112012191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060556006045 + 11060556006046.

It is an arithmetic number, because the mean of its divisors is an integer number (11060556006046).

Almost surely, 2^{22121112012091} is an apocalyptic number.

22121112012091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121112012091 is an equidigital number, since it uses as much as digits as its factorization.

22121112012091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 22121112012091 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, twelve thousand, ninety-one".