22100200121 has 2 divisors, whose sum is σ = 22100200122. Its totient is φ = 22100200120.

The previous prime is 22100200099. The next prime is 22100200127. The reversal of 22100200121 is 12100200122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22010689600 + 89510521 = 148360^2 + 9461^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100200121 - 2³⁴ = 4920330937 is a prime.

It is not a weakly prime, because it can be changed into another prime (22100200127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050100060 + 11050100061.

It is an arithmetic number, because the mean of its divisors is an integer number (11050100061).

Almost surely, 2^22100200121 is an apocalyptic number.

It is an amenable number.

22100200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100200121 is an equidigital number, since it uses as much as digits as its factorization.

22100200121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22100200121 its reverse (12100200122), we get a palindrome (34200400243).

Subtracting from 22100200121 its reverse (12100200122), we obtain a palindrome (9999999999).

The spelling of 22100200121 in words is "twenty-two billion, one hundred million, two hundred thousand, one hundred twenty-one".