13202031221 has 8 divisors (see below), whose sum is σ = 13260180384. Its totient is φ = 13143963600.

The previous prime is 13202031217. The next prime is 13202031223. The reversal of 13202031221 is 12213020231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13202031221 - 2² = 13202031217 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 13202031221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13202031223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316271 + ... + 355571.

It is an arithmetic number, because the mean of its divisors is an integer number (1657522548).

Almost surely, 2^13202031221 is an apocalyptic number.

It is an amenable number.

13202031221 is a deficient number, since it is larger than the sum of its proper divisors (58149163).

13202031221 is a wasteful number, since it uses less digits than its factorization.

13202031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40771.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13202031221 its reverse (12213020231), we get a palindrome (25415051452).

The spelling of 13202031221 in words is "thirteen billion, two hundred two million, thirty-one thousand, two hundred twenty-one".