20222211210021 has 6 divisors (see below), whose sum is σ = 29209860636710. Its totient is φ = 13481474140008.

The previous prime is 20222211209983. The next prime is 20222211210059. The reversal of 20222211210021 is 12001211222202.

It is a happy number.

20222211210021 is a `hidden beast` number, since 2 + 0 + 222 + 211 + 210 + 0 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (20222211209983) and next prime (20222211210059).

It can be written as a sum of positive squares in only one way, i.e., 10586960645121 + 9635250564900 = 3253761^2 + 3104070^2 .

It is not a de Polignac number, because 20222211210021 - 2⁹ = 20222211209509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20222211209976 and 20222211210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222211210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1123456178326 + ... + 1123456178343.

Almost surely, 2^{20222211210021} is an apocalyptic number.

It is an amenable number.

20222211210021 is a deficient number, since it is larger than the sum of its proper divisors (8987649426689).

20222211210021 is a wasteful number, since it uses less digits than its factorization.

20222211210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246912356675 (or 2246912356672 counting only the distinct ones).

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

Adding to 20222211210021 its reverse (12001211222202), we get a palindrome (32223422432223).

The spelling of 20222211210021 in words is "twenty trillion, two hundred twenty-two billion, two hundred eleven million, two hundred ten thousand, twenty-one".