22112202222121 has 4 divisors (see below), whose sum is σ = 24122402424144. Its totient is φ = 20102002020100.

The previous prime is 22112202222037. The next prime is 22112202222127. The reversal of 22112202222121 is 12122220221122.

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 not a de Polignac number, because 22112202222121 - 2⁹ = 22112202221609 is a prime.

It is a super-2 number, since 2×22112202222121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112202222092 and 22112202222101.

It is not an unprimeable number, because it can be changed into a prime (22112202222127) 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, 1005100100995 + ... + 1005100101016.

It is an arithmetic number, because the mean of its divisors is an integer number (6030600606036).

Almost surely, 2^{22112202222121} is an apocalyptic number.

It is an amenable number.

22112202222121 is a deficient number, since it is larger than the sum of its proper divisors (2010200202023).

22112202222121 is a wasteful number, since it uses less digits than its factorization.

22112202222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010200202022.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22112202222121 its reverse (12122220221122), we get a palindrome (34234422443243).

The spelling of 22112202222121 in words is "twenty-two trillion, one hundred twelve billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-one".