202212220221021 has 16 divisors (see below), whose sum is σ = 270048657615488. Its totient is φ = 134592001790400.

The previous prime is 202212220220981. The next prime is 202212220221041. The reversal of 202212220221021 is 120122022212202.

It is not a de Polignac number, because 202212220221021 - 2¹⁸ = 202212219958877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212220221041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17290791 + ... + 26521611.

It is an arithmetic number, because the mean of its divisors is an integer number (16878041100968).

Almost surely, 2^{202212220221021} is an apocalyptic number.

It is an amenable number.

202212220221021 is a deficient number, since it is larger than the sum of its proper divisors (67836437394467).

202212220221021 is a wasteful number, since it uses less digits than its factorization.

202212220221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242532.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 202212220221021 its reverse (120122022212202), we get a palindrome (322334242433223).

The spelling of 202212220221021 in words is "two hundred two trillion, two hundred twelve billion, two hundred twenty million, two hundred twenty-one thousand, twenty-one".