22111102202121 has 12 divisors (see below), whose sum is σ = 33816979838772. Its totient is φ = 13873632754176.

The previous prime is 22111102202089. The next prime is 22111102202149. The reversal of 22111102202121 is 12120220111122.

22111102202121 is a `hidden beast` number, since 2 + 211 + 110 + 220 + 2 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9565479881721 + 12545622320400 = 3092811^2 + 3541980^2 .

It is not a de Polignac number, because 22111102202121 - 2⁵ = 22111102202089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22111102202094 and 22111102202103.

It is not an unprimeable number, because it can be changed into a prime (22111102202521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72258503776 + ... + 72258504081.

It is an arithmetic number, because the mean of its divisors is an integer number (2818081653231).

Almost surely, 2^{22111102202121} is an apocalyptic number.

It is an amenable number.

22111102202121 is a deficient number, since it is larger than the sum of its proper divisors (11705877636651).

22111102202121 is a wasteful number, since it uses less digits than its factorization.

22111102202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144517007880 (or 144517007877 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22111102202121 its reverse (12120220111122), we get a palindrome (34231322313243).

The spelling of 22111102202121 in words is "twenty-two trillion, one hundred eleven billion, one hundred two million, two hundred two thousand, one hundred twenty-one".