202111210013 has 4 divisors (see below), whose sum is σ = 204669579840. Its totient is φ = 199552840188.

The previous prime is 202111210003. The next prime is 202111210073. The reversal of 202111210013 is 310012111202.

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 not a de Polignac number, because 202111210013 - 2⁴ = 202111209997 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 202111210013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202111210003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1279184795 + ... + 1279184952.

It is an arithmetic number, because the mean of its divisors is an integer number (51167394960).

Almost surely, 2^202111210013 is an apocalyptic number.

It is an amenable number.

202111210013 is a deficient number, since it is larger than the sum of its proper divisors (2558369827).

202111210013 is an equidigital number, since it uses as much as digits as its factorization.

202111210013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558369826.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 202111210013 its reverse (310012111202), we get a palindrome (512123321215).

The spelling of 202111210013 in words is "two hundred two billion, one hundred eleven million, two hundred ten thousand, thirteen".