13001221232023 has 4 divisors (see below), whose sum is σ = 13003441012720. Its totient is φ = 12999001451328.

The previous prime is 13001221231967. The next prime is 13001221232057. The reversal of 13001221232023 is 32023212210031.

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

It is a cyclic number.

It is not a de Polignac number, because 13001221232023 - 2⁹ = 13001221231511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13001221231985 and 13001221232003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001221232093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109881563 + ... + 1109893276.

It is an arithmetic number, because the mean of its divisors is an integer number (3250860253180).

Almost surely, 2^{13001221232023} is an apocalyptic number.

13001221232023 is a deficient number, since it is larger than the sum of its proper divisors (2219780697).

13001221232023 is an equidigital number, since it uses as much as digits as its factorization.

13001221232023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219780696.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13001221232023 its reverse (32023212210031), we get a palindrome (45024433442054).

The spelling of 13001221232023 in words is "thirteen trillion, one billion, two hundred twenty-one million, two hundred thirty-two thousand, twenty-three".