13001321123 has 8 divisors (see below), whose sum is σ = 15080424192. Its totient is φ = 10977660936.

The previous prime is 13001321111. The next prime is 13001321143. The reversal of 13001321123 is 32112310031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13001321123 - 2⁶ = 13001321059 is a prime.

It is a super-2 number, since 2×13001321123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13001321143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13860215 + ... + 13861152.

It is an arithmetic number, because the mean of its divisors is an integer number (1885053024).

Almost surely, 2^13001321123 is an apocalyptic number.

13001321123 is a deficient number, since it is larger than the sum of its proper divisors (2079103069).

13001321123 is an equidigital number, since it uses as much as digits as its factorization.

13001321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27721441.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13001321123 its reverse (32112310031), we get a palindrome (45113631154).

The spelling of 13001321123 in words is "thirteen billion, one million, three hundred twenty-one thousand, one hundred twenty-three".