13112200221 has 4 divisors (see below), whose sum is σ = 17482933632. Its totient is φ = 8741466812.

The previous prime is 13112200177. The next prime is 13112200237. The reversal of 13112200221 is 12200221131.

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 13112200221 - 2¹⁰ = 13112199197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13112200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112200261) 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, 2185366701 + ... + 2185366706.

It is an arithmetic number, because the mean of its divisors is an integer number (4370733408).

Almost surely, 2^13112200221 is an apocalyptic number.

It is an amenable number.

13112200221 is a deficient number, since it is larger than the sum of its proper divisors (4370733411).

13112200221 is an equidigital number, since it uses as much as digits as its factorization.

13112200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370733410.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 13112200221 its reverse (12200221131), we get a palindrome (25312421352).

It can be divided in two parts, 131 and 12200221, that multiplied together give a palindrome (1598228951).

The spelling of 13112200221 in words is "thirteen billion, one hundred twelve million, two hundred thousand, two hundred twenty-one".