22222110121111 has 4 divisors (see below), whose sum is σ = 22222119768232. Its totient is φ = 22222100473992.

The previous prime is 22222110121109. The next prime is 22222110121139. The reversal of 22222110121111 is 11112101122222.

It is a happy number.

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 22222110121111 - 2¹ = 22222110121109 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 (22222110121711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878680 + ... + 6724306.

It is an arithmetic number, because the mean of its divisors is an integer number (5555529942058).

Almost surely, 2^{22222110121111} is an apocalyptic number.

22222110121111 is a deficient number, since it is larger than the sum of its proper divisors (9647121).

22222110121111 is an equidigital number, since it uses as much as digits as its factorization.

22222110121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9647120.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22222110121111 its reverse (11112101122222), we get a palindrome (33334211243333).

The spelling of 22222110121111 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, one hundred eleven".