22100202121 has 16 divisors (see below), whose sum is σ = 22551240384. Its totient is φ = 21653051904.

The previous prime is 22100202097. The next prime is 22100202133. The reversal of 22100202121 is 12120200122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22100202121 - 2²¹ = 22098104969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22100200121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18524301 + ... + 18525493.

It is an arithmetic number, because the mean of its divisors is an integer number (1409452524).

Almost surely, 2^22100202121 is an apocalyptic number.

It is an amenable number.

22100202121 is a deficient number, since it is larger than the sum of its proper divisors (451038263).

22100202121 is a wasteful number, since it uses less digits than its factorization.

22100202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22100202121 its reverse (12120200122), we get a palindrome (34220402243).

The spelling of 22100202121 in words is "twenty-two billion, one hundred million, two hundred two thousand, one hundred twenty-one".