22022121121 has 72 divisors (see below), whose sum is σ = 31262958720. Its totient is φ = 15149122560.

The previous prime is 22022121101. The next prime is 22022121127. The reversal of 22022121121 is 12112122022.

It is a happy number.

It is not a de Polignac number, because 22022121121 - 2⁵ = 22022121089 is a prime.

22022121121 is a modest number, since divided by 121121 gives 22022 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22022121095 and 22022121104.

It is not an unprimeable number, because it can be changed into a prime (22022121127) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3288945 + ... + 3295633.

It is an arithmetic number, because the mean of its divisors is an integer number (434207760).

Almost surely, 2^22022121121 is an apocalyptic number.

It is an amenable number.

22022121121 is a deficient number, since it is larger than the sum of its proper divisors (9240837599).

22022121121 is a wasteful number, since it uses less digits than its factorization.

22022121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767 (or 6743 counting only the distinct ones).

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

Adding to 22022121121 its reverse (12112122022), we get a palindrome (34134243143).

Subtracting from 22022121121 its reverse (12112122022), we obtain a palindrome (9909999099).

The spelling of 22022121121 in words is "twenty-two billion, twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".