22111220121121 has 8 divisors (see below), whose sum is σ = 22647121259840. Its totient is φ = 21581374362768.

The previous prime is 22111220121101. The next prime is 22111220121127. The reversal of 22111220121121 is 12112102211122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22111220121121 - 2⁹ = 22111220120609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111220121127) 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, 1513837701 + ... + 1513852306.

It is an arithmetic number, because the mean of its divisors is an integer number (2830890157480).

Almost surely, 2^{22111220121121} is an apocalyptic number.

It is an amenable number.

22111220121121 is a deficient number, since it is larger than the sum of its proper divisors (535901138719).

22111220121121 is a wasteful number, since it uses less digits than its factorization.

22111220121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027690183.

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

Adding to 22111220121121 its reverse (12112102211122), we get a palindrome (34223322332243).

The spelling of 22111220121121 in words is "twenty-two trillion, one hundred eleven billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".