13213221133 has 4 divisors (see below), whose sum is σ = 15100824160. Its totient is φ = 11325618108.

The previous prime is 13213221103. The next prime is 13213221137. The reversal of 13213221133 is 33112231231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33112231231 = 2693 ⋅12295667.

It is not a de Polignac number, because 13213221133 - 2³³ = 4623286541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213221137) 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, 943801503 + ... + 943801516.

It is an arithmetic number, because the mean of its divisors is an integer number (3775206040).

Almost surely, 2^13213221133 is an apocalyptic number.

It is an amenable number.

13213221133 is a deficient number, since it is larger than the sum of its proper divisors (1887603027).

13213221133 is an equidigital number, since it uses as much as digits as its factorization.

13213221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887603026.

The product of its digits is 648, while the sum is 22.

Adding to 13213221133 its reverse (33112231231), we get a palindrome (46325452364).

The spelling of 13213221133 in words is "thirteen billion, two hundred thirteen million, two hundred twenty-one thousand, one hundred thirty-three".