22085091 has 36 divisors (see below), whose sum is σ = 38760592. Its totient is φ = 11867904.

The previous prime is 22085081. The next prime is 22085123. The reversal of 22085091 is 19058022.

It is not a de Polignac number, because 22085091 - 2⁶ = 22085027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22085081) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17601 + ... + 18813.

Almost surely, 2^22085091 is an apocalyptic number.

22085091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22085091 is a deficient number, since it is larger than the sum of its proper divisors (16675501).

22085091 is a wasteful number, since it uses less digits than its factorization.

22085091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 22085091 is about 4699.4777369406. The cubic root of 22085091 is about 280.5647233564.

The spelling of 22085091 in words is "twenty-two million, eighty-five thousand, ninety-one".