202112110221 has 16 divisors (see below), whose sum is σ = 317915209728. Its totient is φ = 111767065200.

The previous prime is 202112110217. The next prime is 202112110229. The reversal of 202112110221 is 122011211202.

202112110221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 202112110221 - 2² = 202112110217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202112110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112110229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155231385 + ... + 155232686.

It is an arithmetic number, because the mean of its divisors is an integer number (19869700608).

Almost surely, 2^202112110221 is an apocalyptic number.

202112110221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202112110221 is a deficient number, since it is larger than the sum of its proper divisors (115803099507).

202112110221 is a wasteful number, since it uses less digits than its factorization.

202112110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310464112.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202112110221 its reverse (122011211202), we get a palindrome (324123321423).

The spelling of 202112110221 in words is "two hundred two billion, one hundred twelve million, one hundred ten thousand, two hundred twenty-one".