22120209111 has 96 divisors (see below), whose sum is σ = 40877415936. Its totient is φ = 10456992000.

The previous prime is 22120209079. The next prime is 22120209173. The reversal of 22120209111 is 11190202122.

It is not a de Polignac number, because 22120209111 - 2⁵ = 22120209079 is a prime.

It is a super-2 number, since 2×22120209111² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120209011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1485081 + ... + 1499901.

It is an arithmetic number, because the mean of its divisors is an integer number (425806416).

Almost surely, 2^22120209111 is an apocalyptic number.

22120209111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22120209111 is a deficient number, since it is larger than the sum of its proper divisors (18757206825).

22120209111 is a wasteful number, since it uses less digits than its factorization.

22120209111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14933 (or 14926 counting only the distinct ones).

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

The spelling of 22120209111 in words is "twenty-two billion, one hundred twenty million, two hundred nine thousand, one hundred eleven".