22111102121111 has 4 divisors (see below), whose sum is σ = 22111112188992. Its totient is φ = 22111092053232.

The previous prime is 22111102121039. The next prime is 22111102121131. The reversal of 22111102121111 is 11112120111122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22111102121111 - 2²⁶ = 22111035012247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22111102121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111102121131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178631 + ... + 6652376.

It is an arithmetic number, because the mean of its divisors is an integer number (5527778047248).

Almost surely, 2^{22111102121111} is an apocalyptic number.

22111102121111 is a deficient number, since it is larger than the sum of its proper divisors (10067881).

22111102121111 is an equidigital number, since it uses as much as digits as its factorization.

22111102121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067880.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 22111102121111 its reverse (11112120111122), we get a palindrome (33223222232233).

The spelling of 22111102121111 in words is "twenty-two trillion, one hundred eleven billion, one hundred two million, one hundred twenty-one thousand, one hundred eleven".