202112020221 has 8 divisors (see below), whose sum is σ = 276766009824. Its totient is φ = 131099688720.

The previous prime is 202112020213. The next prime is 202112020291. The reversal of 202112020221 is 122020211202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202112020221 - 2³ = 202112020213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202112020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112020291) 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 7 ways as a sum of consecutive naturals, for example, 910414395 + ... + 910414616.

It is an arithmetic number, because the mean of its divisors is an integer number (34595751228).

Almost surely, 2^202112020221 is an apocalyptic number.

It is an amenable number.

202112020221 is a deficient number, since it is larger than the sum of its proper divisors (74653989603).

202112020221 is a wasteful number, since it uses less digits than its factorization.

202112020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820829051.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202112020221 its reverse (122020211202), we get a palindrome (324132231423).

The spelling of 202112020221 in words is "two hundred two billion, one hundred twelve million, twenty thousand, two hundred twenty-one".