13133320221 has 32 divisors (see below), whose sum is σ = 20700160000. Its totient is φ = 7247931840.

The previous prime is 13133320217. The next prime is 13133320231. The reversal of 13133320221 is 12202333131.

It is not a de Polignac number, because 13133320221 - 2² = 13133320217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13133320231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304635 + ... + 345063.

It is an arithmetic number, because the mean of its divisors is an integer number (646880000).

Almost surely, 2^13133320221 is an apocalyptic number.

It is an amenable number.

13133320221 is a deficient number, since it is larger than the sum of its proper divisors (7566839779).

13133320221 is a wasteful number, since it uses less digits than its factorization.

13133320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40969.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13133320221 its reverse (12202333131), we get a palindrome (25335653352).

The spelling of 13133320221 in words is "thirteen billion, one hundred thirty-three million, three hundred twenty thousand, two hundred twenty-one".