13213212233 has 4 divisors (see below), whose sum is σ = 14229613188. Its totient is φ = 12196811280.

The previous prime is 13213212227. The next prime is 13213212253. The reversal of 13213212233 is 33221231231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1903315129 + 11309897104 = 43627^2 + 106348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13213212233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13213212199 and 13213212208.

It is not an unprimeable number, because it can be changed into a prime (13213212253) 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, 508200458 + ... + 508200483.

It is an arithmetic number, because the mean of its divisors is an integer number (3557403297).

Almost surely, 2^13213212233 is an apocalyptic number.

13213212233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13213212233 is a deficient number, since it is larger than the sum of its proper divisors (1016400955).

13213212233 is a wasteful number, since it uses less digits than its factorization.

13213212233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016400954.

The product of its digits is 1296, while the sum is 23.

Adding to 13213212233 its reverse (33221231231), we get a palindrome (46434443464).

The spelling of 13213212233 in words is "thirteen billion, two hundred thirteen million, two hundred twelve thousand, two hundred thirty-three".