22120112091 has 24 divisors (see below), whose sum is σ = 37427724864. Its totient is φ = 11490966480.

The previous prime is 22120112081. The next prime is 22120112099. The reversal of 22120112091 is 19021102122.

It is not a de Polignac number, because 22120112091 - 2¹⁷ = 22119981019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22120112099) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6838245 + ... + 6841478.

It is an arithmetic number, because the mean of its divisors is an integer number (1559488536).

Almost surely, 2^22120112091 is an apocalyptic number.

22120112091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22120112091 is a deficient number, since it is larger than the sum of its proper divisors (15307612773).

22120112091 is a wasteful number, since it uses less digits than its factorization.

22120112091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13679751 (or 13679744 counting only the distinct ones).

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

The spelling of 22120112091 in words is "twenty-two billion, one hundred twenty million, one hundred twelve thousand, ninety-one".