22120122220121 has 4 divisors (see below), whose sum is σ = 22120163108112. Its totient is φ = 22120081332132.

The previous prime is 22120122220067. The next prime is 22120122220139. The reversal of 22120122220121 is 12102222102122.

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 22120122220121 - 2⁶ = 22120122220057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120122220093 and 22120122220102.

It is not an unprimeable number, because it can be changed into a prime (22120122220321) 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, 19621475 + ... + 20718168.

It is an arithmetic number, because the mean of its divisors is an integer number (5530040777028).

Almost surely, 2^{22120122220121} is an apocalyptic number.

It is an amenable number.

22120122220121 is a deficient number, since it is larger than the sum of its proper divisors (40887991).

22120122220121 is an equidigital number, since it uses as much as digits as its factorization.

22120122220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40887990.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22120122220121 its reverse (12102222102122), we get a palindrome (34222344322243).

The spelling of 22120122220121 in words is "twenty-two trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-one".