22210021221021 has 24 divisors (see below), whose sum is σ = 32102056116000. Its totient is φ = 14797028979936.

The previous prime is 22210021220983. The next prime is 22210021221049. The reversal of 22210021221021 is 12012212001222.

It is a happy number.

22210021221021 is a `hidden beast` number, since 2 + 221 + 0 + 0 + 212 + 210 + 21 = 666.

It is not a de Polignac number, because 22210021221021 - 2⁹ = 22210021220509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22210021220985 and 22210021221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210021221071) 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, 558736855 + ... + 558776603.

It is an arithmetic number, because the mean of its divisors is an integer number (1337585671500).

Almost surely, 2^{22210021221021} is an apocalyptic number.

It is an amenable number.

22210021221021 is a deficient number, since it is larger than the sum of its proper divisors (9892034894979).

22210021221021 is a wasteful number, since it uses less digits than its factorization.

22210021221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78665 (or 78662 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22210021221021 its reverse (12012212001222), we get a palindrome (34222233222243).

The spelling of 22210021221021 in words is "twenty-two trillion, two hundred ten billion, twenty-one million, two hundred twenty-one thousand, twenty-one".