22011212011111 has 16 divisors (see below), whose sum is σ = 22482835437888. Its totient is φ = 21544287897600.

The previous prime is 22011212011097. The next prime is 22011212011127. The reversal of 22011212011111 is 11111021211022.

It is a cyclic number.

It is not a de Polignac number, because 22011212011111 - 2²³ = 22011203622503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011212017111) 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, 30860526 + ... + 31565716.

It is an arithmetic number, because the mean of its divisors is an integer number (1405177214868).

Almost surely, 2^{22011212011111} is an apocalyptic number.

22011212011111 is a deficient number, since it is larger than the sum of its proper divisors (471623426777).

22011212011111 is a wasteful number, since it uses less digits than its factorization.

22011212011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708522.

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

Adding to 22011212011111 its reverse (11111021211022), we get a palindrome (33122233222133).

The spelling of 22011212011111 in words is "twenty-two trillion, eleven billion, two hundred twelve million, eleven thousand, one hundred eleven".