22011122091 has 8 divisors (see below), whose sum is σ = 33540757504. Its totient is φ = 12577784040.

The previous prime is 22011122069. The next prime is 22011122149. The reversal of 22011122091 is 19022111022.

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

It is not a de Polignac number, because 22011122091 - 2⁹ = 22011121579 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: 1048148671 = 22011122091 / (2 + 2 + 0 + 1 + 1 + 1 + 2 + 2 + 0 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011122041) 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, 524074315 + ... + 524074356.

It is an arithmetic number, because the mean of its divisors is an integer number (4192594688).

Almost surely, 2^22011122091 is an apocalyptic number.

22011122091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22011122091 is a deficient number, since it is larger than the sum of its proper divisors (11529635413).

22011122091 is a wasteful number, since it uses less digits than its factorization.

22011122091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048148681.

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

The spelling of 22011122091 in words is "twenty-two billion, eleven million, one hundred twenty-two thousand, ninety-one".