22222121111121 has 32 divisors (see below), whose sum is σ = 29784522240000. Its totient is φ = 14737372771968.

The previous prime is 22222121111119. The next prime is 22222121111143. The reversal of 22222121111121 is 12111112122222.

It is not a de Polignac number, because 22222121111121 - 2¹ = 22222121111119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22222121111111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4779976405 + ... + 4779981053.

It is an arithmetic number, because the mean of its divisors is an integer number (930766320000).

Almost surely, 2^{22222121111121} is an apocalyptic number.

It is an amenable number.

22222121111121 is a deficient number, since it is larger than the sum of its proper divisors (7562401128879).

22222121111121 is a wasteful number, since it uses less digits than its factorization.

22222121111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10413.

The product of its digits is 128, while the sum is 21.

Adding to 22222121111121 its reverse (12111112122222), we get a palindrome (34333233233343).

It can be divided in two parts, 2222212 and 1111121, that added together give a palindrome (3333333).

The spelling of 22222121111121 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty-one".