13033021123 has 4 divisors (see below), whose sum is σ = 13034677320. Its totient is φ = 13031364928.

The previous prime is 13033021039. The next prime is 13033021153. The reversal of 13033021123 is 32112033031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13033021123 is a prime.

It is a super-2 number, since 2×13033021123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13033021123.

It is not an unprimeable number, because it can be changed into a prime (13033021153) 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, 816238 + ... + 832051.

It is an arithmetic number, because the mean of its divisors is an integer number (3258669330).

Almost surely, 2^13033021123 is an apocalyptic number.

13033021123 is a deficient number, since it is larger than the sum of its proper divisors (1656197).

13033021123 is an equidigital number, since it uses as much as digits as its factorization.

13033021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656196.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13033021123 its reverse (32112033031), we get a palindrome (45145054154).

The spelling of 13033021123 in words is "thirteen billion, thirty-three million, twenty-one thousand, one hundred twenty-three".