22102220091 has 8 divisors (see below), whose sum is σ = 33679573504. Its totient is φ = 12629840040.

The previous prime is 22102220059. The next prime is 22102220191. The reversal of 22102220091 is 19002220122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22102220091 - 2⁵ = 22102220059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1052486671 = 22102220091 / (2 + 2 + 1 + 0 + 2 + 2 + 2 + 0 + 0 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102220011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526243315 + ... + 526243356.

It is an arithmetic number, because the mean of its divisors is an integer number (4209946688).

Almost surely, 2^22102220091 is an apocalyptic number.

22102220091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22102220091 is a deficient number, since it is larger than the sum of its proper divisors (11577353413).

22102220091 is a wasteful number, since it uses less digits than its factorization.

22102220091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052486681.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 22102220091 in words is "twenty-two billion, one hundred two million, two hundred twenty thousand, ninety-one".