202212221021 has 8 divisors (see below), whose sum is σ = 205169897664. Its totient is φ = 199257589440.

The previous prime is 202212221011. The next prime is 202212221033. The reversal of 202212221021 is 120122212202.

It is a happy number.

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 202212221021 - 2¹⁰ = 202212219997 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 (202212221011) 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, 627311 + ... + 893276.

It is an arithmetic number, because the mean of its divisors is an integer number (25646237208).

Almost surely, 2^202212221021 is an apocalyptic number.

It is an amenable number.

202212221021 is a deficient number, since it is larger than the sum of its proper divisors (2957676643).

202212221021 is a wasteful number, since it uses less digits than its factorization.

202212221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522531.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202212221021 its reverse (120122212202), we get a palindrome (322334433223).

The spelling of 202212221021 in words is "two hundred two billion, two hundred twelve million, two hundred twenty-one thousand, twenty-one".