13120202221 has 24 divisors (see below), whose sum is σ = 16075358880. Its totient is φ = 10647497952.

The previous prime is 13120202213. The next prime is 13120202279. The reversal of 13120202221 is 12220202131.

It is a happy number.

13120202221 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 13120202221 - 2³ = 13120202213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13120202195 and 13120202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120202281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2047795 + ... + 2054191.

It is an arithmetic number, because the mean of its divisors is an integer number (669806620).

Almost surely, 2^13120202221 is an apocalyptic number.

It is an amenable number.

13120202221 is a deficient number, since it is larger than the sum of its proper divisors (2955156659).

13120202221 is a wasteful number, since it uses less digits than its factorization.

13120202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8633 (or 8626 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13120202221 its reverse (12220202131), we get a palindrome (25340404352).

The spelling of 13120202221 in words is "thirteen billion, one hundred twenty million, two hundred two thousand, two hundred twenty-one".