13011123011233 has 4 divisors (see below), whose sum is σ = 13011130257940. Its totient is φ = 13011115764528.

The previous prime is 13011123011231. The next prime is 13011123011269. The reversal of 13011123011233 is 33211032111031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6813472929169 + 6197650082064 = 2610263^2 + 2489508^2 .

It is a cyclic number.

It is not a de Polignac number, because 13011123011233 - 2¹ = 13011123011231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13011123011231) 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, 1297363 + ... + 5263591.

It is an arithmetic number, because the mean of its divisors is an integer number (3252782564485).

Almost surely, 2^{13011123011233} is an apocalyptic number.

It is an amenable number.

13011123011233 is a deficient number, since it is larger than the sum of its proper divisors (7246707).

13011123011233 is an equidigital number, since it uses as much as digits as its factorization.

13011123011233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7246706.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 13011123011233 its reverse (33211032111031), we get a palindrome (46222155122264).

The spelling of 13011123011233 in words is "thirteen trillion, eleven billion, one hundred twenty-three million, eleven thousand, two hundred thirty-three".