13122312233 has 2 divisors, whose sum is σ = 13122312234. Its totient is φ = 13122312232.

The previous prime is 13122312227. The next prime is 13122312263. The reversal of 13122312233 is 33221322131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11543998249 + 1578313984 = 107443^2 + 39728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122312233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13122312199 and 13122312208.

It is not a weakly prime, because it can be changed into another prime (13122312263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561156116 + 6561156117.

It is an arithmetic number, because the mean of its divisors is an integer number (6561156117).

Almost surely, 2^13122312233 is an apocalyptic number.

It is an amenable number.

13122312233 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122312233 is an equidigital number, since it uses as much as digits as its factorization.

13122312233 is an evil number, because the sum of its binary digits is even.

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

Adding to 13122312233 its reverse (33221322131), we get a palindrome (46343634364).

The spelling of 13122312233 in words is "thirteen billion, one hundred twenty-two million, three hundred twelve thousand, two hundred thirty-three".