202212201210021 has 12 divisors (see below), whose sum is σ = 292085206938720. Its totient is φ = 134807711231400.

The previous prime is 202212201209999. The next prime is 202212201210031. The reversal of 202212201210021 is 120012102212202.

It is a happy number.

202212201210021 is a `hidden beast` number, since 20 + 2 + 212 + 201 + 210 + 0 + 21 = 666.

It is not a de Polignac number, because 202212201210021 - 2¹⁴ = 202212201193637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202212201209976 and 202212201210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212201210031) 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 11 ways as a sum of consecutive naturals, for example, 32200305 + ... + 37964246.

It is an arithmetic number, because the mean of its divisors is an integer number (24340433911560).

Almost surely, 2^{202212201210021} is an apocalyptic number.

It is an amenable number.

202212201210021 is a deficient number, since it is larger than the sum of its proper divisors (89873005728699).

202212201210021 is a wasteful number, since it uses less digits than its factorization.

202212201210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70484776 (or 70484773 counting only the distinct ones).

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

Adding to 202212201210021 its reverse (120012102212202), we get a palindrome (322224303422223).

The spelling of 202212201210021 in words is "two hundred two trillion, two hundred twelve billion, two hundred one million, two hundred ten thousand, twenty-one".