22012111091 has 2 divisors, whose sum is σ = 22012111092. Its totient is φ = 22012111090.

The previous prime is 22012111067. The next prime is 22012111129. The reversal of 22012111091 is 19011121022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22012111091 - 2⁶ = 22012111027 is a prime.

It is not a weakly prime, because it can be changed into another prime (22012111391) 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, 11006055545 + 11006055546.

It is an arithmetic number, because the mean of its divisors is an integer number (11006055546).

Almost surely, 2^22012111091 is an apocalyptic number.

22012111091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012111091 is an equidigital number, since it uses as much as digits as its factorization.

22012111091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 22012111091 in words is "twenty-two billion, twelve million, one hundred eleven thousand, ninety-one".