22111202220121 has 4 divisors (see below), whose sum is σ = 25269945394432. Its totient is φ = 18952459045812.

The previous prime is 22111202220119. The next prime is 22111202220127. The reversal of 22111202220121 is 12102220211122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22111202220121 - 2¹ = 22111202220119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111202220127) 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, 1579371587145 + ... + 1579371587158.

It is an arithmetic number, because the mean of its divisors is an integer number (6317486348608).

Almost surely, 2^{22111202220121} is an apocalyptic number.

It is an amenable number.

22111202220121 is a deficient number, since it is larger than the sum of its proper divisors (3158743174311).

22111202220121 is an equidigital number, since it uses as much as digits as its factorization.

22111202220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158743174310.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22111202220121 its reverse (12102220211122), we get a palindrome (34213422431243).

The spelling of 22111202220121 in words is "twenty-two trillion, one hundred eleven billion, two hundred two million, two hundred twenty thousand, one hundred twenty-one".