22222222211121 has 8 divisors (see below), whose sum is σ = 29724901737024. Its totient is φ = 14767178746320.

The previous prime is 22222222211099. The next prime is 22222222211207. The reversal of 22222222211121 is 12111222222222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22222222211121 - 2⁵ = 22222222211089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22222222211091 and 22222222211100.

It is not an unprimeable number, because it can be changed into a prime (22222222291121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11909014186 + ... + 11909016051.

It is an arithmetic number, because the mean of its divisors is an integer number (3715612717128).

Almost surely, 2^{22222222211121} is an apocalyptic number.

It is an amenable number.

22222222211121 is a deficient number, since it is larger than the sum of its proper divisors (7502679525903).

22222222211121 is a wasteful number, since it uses less digits than its factorization.

22222222211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23818030551.

The product of its digits is 1024, while the sum is 24.

Adding to 22222222211121 its reverse (12111222222222), we get a palindrome (34333444433343).

The spelling of 22222222211121 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".