13221333313131 has 4 divisors (see below), whose sum is σ = 17628444417512. Its totient is φ = 8814222208752.

The previous prime is 13221333313127. The next prime is 13221333313163. The reversal of 13221333313131 is 13131333312231.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13221333313131 - 2² = 13221333313127 is a prime.

It is a super-2 number, since 2×13221333313131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221333313831) 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, 2203555552186 + ... + 2203555552191.

It is an arithmetic number, because the mean of its divisors is an integer number (4407111104378).

Almost surely, 2^{13221333313131} is an apocalyptic number.

13221333313131 is a deficient number, since it is larger than the sum of its proper divisors (4407111104381).

13221333313131 is an equidigital number, since it uses as much as digits as its factorization.

13221333313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407111104380.

The product of its digits is 8748, while the sum is 30.

Adding to 13221333313131 its reverse (13131333312231), we get a palindrome (26352666625362).

The spelling of 13221333313131 in words is "thirteen trillion, two hundred twenty-one billion, three hundred thirty-three million, three hundred thirteen thousand, one hundred thirty-one".