13221612233 has 2 divisors, whose sum is σ = 13221612234. Its totient is φ = 13221612232.

The previous prime is 13221612221. The next prime is 13221612247. The reversal of 13221612233 is 33221612231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9798426169 + 3423186064 = 98987^2 + 58508^2 .

It is an emirp because it is prime and its reverse (33221612231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13221612233 is a prime.

It is a super-2 number, since 2×13221612233² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13221612203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610806116 + 6610806117.

It is an arithmetic number, because the mean of its divisors is an integer number (6610806117).

Almost surely, 2^13221612233 is an apocalyptic number.

It is an amenable number.

13221612233 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221612233 is an equidigital number, since it uses as much as digits as its factorization.

13221612233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The spelling of 13221612233 in words is "thirteen billion, two hundred twenty-one million, six hundred twelve thousand, two hundred thirty-three".