202112202221 has 8 divisors (see below), whose sum is σ = 202732424640. Its totient is φ = 201492895968.

The previous prime is 202112202203. The next prime is 202112202223. The reversal of 202112202221 is 122202211202.

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 202112202221 - 2⁶ = 202112202157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202112202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112202223) 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, 214160 + ... + 670886.

It is an arithmetic number, because the mean of its divisors is an integer number (25341553080).

Almost surely, 2^202112202221 is an apocalyptic number.

It is an amenable number.

202112202221 is a deficient number, since it is larger than the sum of its proper divisors (620222419).

202112202221 is an equidigital number, since it uses as much as digits as its factorization.

202112202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458083.

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

Adding to 202112202221 its reverse (122202211202), we get a palindrome (324314413423).

The spelling of 202112202221 in words is "two hundred two billion, one hundred twelve million, two hundred two thousand, two hundred twenty-one".