13221213023 has 4 divisors (see below), whose sum is σ = 13917066360. Its totient is φ = 12525359688.

The previous prime is 13221213007. The next prime is 13221213041. The reversal of 13221213023 is 32031212231.

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 13221213023 - 2⁴ = 13221213007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13221212986 and 13221213004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221213043) 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, 347926640 + ... + 347926677.

It is an arithmetic number, because the mean of its divisors is an integer number (3479266590).

Almost surely, 2^13221213023 is an apocalyptic number.

13221213023 is a deficient number, since it is larger than the sum of its proper divisors (695853337).

13221213023 is an equidigital number, since it uses as much as digits as its factorization.

13221213023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695853336.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13221213023 its reverse (32031212231), we get a palindrome (45252425254).

The spelling of 13221213023 in words is "thirteen billion, two hundred twenty-one million, two hundred thirteen thousand, twenty-three".