22120012111 has 16 divisors (see below), whose sum is σ = 24459019200. Its totient is φ = 19897765888.

The previous prime is 22120012091. The next prime is 22120012127. The reversal of 22120012111 is 11121002122.

It is not a de Polignac number, because 22120012111 - 2¹⁷ = 22119881039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120012091 and 22120012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120012181) 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, 482055 + ... + 525943.

It is an arithmetic number, because the mean of its divisors is an integer number (1528688700).

Almost surely, 2^22120012111 is an apocalyptic number.

22120012111 is a deficient number, since it is larger than the sum of its proper divisors (2339007089).

22120012111 is a wasteful number, since it uses less digits than its factorization.

22120012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45218.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22120012111 its reverse (11121002122), we get a palindrome (33241014233).

The spelling of 22120012111 in words is "twenty-two billion, one hundred twenty million, twelve thousand, one hundred eleven".