22123002222121 has 4 divisors (see below), whose sum is σ = 22130783794512. Its totient is φ = 22115220649732.

The previous prime is 22123002222049. The next prime is 22123002222137. The reversal of 22123002222121 is 12122220032122.

It is a happy number.

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 22123002222121 - 2⁹ = 22123002221609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22123002222092 and 22123002222101.

It is not an unprimeable number, because it can be changed into a prime (22123002222221) 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, 3890781931 + ... + 3890787616.

It is an arithmetic number, because the mean of its divisors is an integer number (5532695948628).

Almost surely, 2^{22123002222121} is an apocalyptic number.

It is an amenable number.

22123002222121 is a deficient number, since it is larger than the sum of its proper divisors (7781572391).

22123002222121 is an equidigital number, since it uses as much as digits as its factorization.

22123002222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781572390.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22123002222121 its reverse (12122220032122), we get a palindrome (34245222254243).

The spelling of 22123002222121 in words is "twenty-two trillion, one hundred twenty-three billion, two million, two hundred twenty-two thousand, one hundred twenty-one".