13102212221 has 4 divisors (see below), whose sum is σ = 14973956832. Its totient is φ = 11230467612.

The previous prime is 13102212199. The next prime is 13102212281. The reversal of 13102212221 is 12221220131.

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 not a de Polignac number, because 13102212221 - 2⁶ = 13102212157 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 13102212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102212281) 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, 935872295 + ... + 935872308.

It is an arithmetic number, because the mean of its divisors is an integer number (3743489208).

Almost surely, 2^13102212221 is an apocalyptic number.

It is an amenable number.

13102212221 is a deficient number, since it is larger than the sum of its proper divisors (1871744611).

13102212221 is an equidigital number, since it uses as much as digits as its factorization.

13102212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871744610.

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

Adding to 13102212221 its reverse (12221220131), we get a palindrome (25323432352).

The spelling of 13102212221 in words is "thirteen billion, one hundred two million, two hundred twelve thousand, two hundred twenty-one".