22102221121021 has 8 divisors (see below), whose sum is σ = 22382083013120. Its totient is φ = 21822361402608.

The previous prime is 22102221120961. The next prime is 22102221121049. The reversal of 22102221121021 is 12012112220122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22102221121021 - 2¹⁷ = 22102220989949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22102221121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102221121051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32761315 + ... + 33429151.

It is an arithmetic number, because the mean of its divisors is an integer number (2797760376640).

Almost surely, 2^{22102221121021} is an apocalyptic number.

It is an amenable number.

22102221121021 is a deficient number, since it is larger than the sum of its proper divisors (279861892099).

22102221121021 is an equidigital number, since it uses as much as digits as its factorization.

22102221121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086843.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22102221121021 its reverse (12012112220122), we get a palindrome (34114333341143).

The spelling of 22102221121021 in words is "twenty-two trillion, one hundred two billion, two hundred twenty-one million, one hundred twenty-one thousand, twenty-one".