22022112121 has 4 divisors (see below), whose sum is σ = 22033242000. Its totient is φ = 22010982244.

The previous prime is 22022112113. The next prime is 22022112139. The reversal of 22022112121 is 12121122022.

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 22022112121 - 2³ = 22022112113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22022112095 and 22022112104.

It is not an unprimeable number, because it can be changed into a prime (22022112181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5561971 + ... + 5565928.

It is an arithmetic number, because the mean of its divisors is an integer number (5508310500).

Almost surely, 2^22022112121 is an apocalyptic number.

It is an amenable number.

22022112121 is a deficient number, since it is larger than the sum of its proper divisors (11129879).

22022112121 is a wasteful number, since it uses less digits than its factorization.

22022112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11129878.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22022112121 its reverse (12121122022), we get a palindrome (34143234143).

Subtracting from 22022112121 its reverse (12121122022), we obtain a palindrome (9900990099).

The spelling of 22022112121 in words is "twenty-two billion, twenty-two million, one hundred twelve thousand, one hundred twenty-one".