22120102121 has 4 divisors (see below), whose sum is σ = 23821648452. Its totient is φ = 20418555792.

The previous prime is 22120102117. The next prime is 22120102127. The reversal of 22120102121 is 12120102122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12120102122 = 2 ⋅6060051061.

It can be written as a sum of positive squares in 2 ways, for example, as 902101225 + 21218000896 = 30035^2 + 145664^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120102121 - 2² = 22120102117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120102096 and 22120102105.

It is not an unprimeable number, because it can be changed into a prime (22120102127) 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, 850773146 + ... + 850773171.

It is an arithmetic number, because the mean of its divisors is an integer number (5955412113).

Almost surely, 2^22120102121 is an apocalyptic number.

It is an amenable number.

22120102121 is a deficient number, since it is larger than the sum of its proper divisors (1701546331).

22120102121 is a wasteful number, since it uses less digits than its factorization.

22120102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701546330.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22120102121 its reverse (12120102122), we get a palindrome (34240204243).

Subtracting from 22120102121 its reverse (12120102122), we obtain a palindrome (9999999999).

The spelling of 22120102121 in words is "twenty-two billion, one hundred twenty million, one hundred two thousand, one hundred twenty-one".