22012112091 has 16 divisors (see below), whose sum is σ = 31090672800. Its totient is φ = 13804965888.

The previous prime is 22012112081. The next prime is 22012112107. The reversal of 22012112091 is 19021121022.

It is not a de Polignac number, because 22012112091 - 2¹⁰ = 22012111067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22012112041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7215 + ... + 209943.

It is an arithmetic number, because the mean of its divisors is an integer number (1943167050).

Almost surely, 2^22012112091 is an apocalyptic number.

22012112091 is a deficient number, since it is larger than the sum of its proper divisors (9078560709).

22012112091 is a wasteful number, since it uses less digits than its factorization.

22012112091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204878.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 22012112091 in words is "twenty-two billion, twelve million, one hundred twelve thousand, ninety-one".