202112013221 has 4 divisors (see below), whose sum is σ = 202152709152. Its totient is φ = 202071317292.

The previous prime is 202112013199. The next prime is 202112013223. The reversal of 202112013221 is 122310211202.

202112013221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202112013221 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 202112013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112013223) 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 3 ways as a sum of consecutive naturals, for example, 20340515 + ... + 20350448.

It is an arithmetic number, because the mean of its divisors is an integer number (50538177288).

Almost surely, 2^202112013221 is an apocalyptic number.

It is an amenable number.

202112013221 is a deficient number, since it is larger than the sum of its proper divisors (40695931).

202112013221 is an equidigital number, since it uses as much as digits as its factorization.

202112013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40695930.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 202112013221 its reverse (122310211202), we get a palindrome (324422224423).

The spelling of 202112013221 in words is "two hundred two billion, one hundred twelve million, thirteen thousand, two hundred twenty-one".