22010121102221 has 24 divisors (see below), whose sum is σ = 27342557520960. Its totient is φ = 17343132291072.

The previous prime is 22010121102181. The next prime is 22010121102223. The reversal of 22010121102221 is 12220112101022.

It is not a de Polignac number, because 22010121102221 - 2²² = 22010116907917 is a prime.

It is a super-2 number, since 2×22010121102221² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 22010121102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010121102223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126423956 + ... + 126597933.

It is an arithmetic number, because the mean of its divisors is an integer number (1139273230040).

Almost surely, 2^{22010121102221} is an apocalyptic number.

It is an amenable number.

22010121102221 is a deficient number, since it is larger than the sum of its proper divisors (5332436418739).

22010121102221 is a wasteful number, since it uses less digits than its factorization.

22010121102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253021973 (or 253021956 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22010121102221 its reverse (12220112101022), we get a palindrome (34230233203243).

The spelling of 22010121102221 in words is "twenty-two trillion, ten billion, one hundred twenty-one million, one hundred two thousand, two hundred twenty-one".