13023444213221 has 16 divisors (see below), whose sum is σ = 14065845763200. Its totient is φ = 11986876110528.

The previous prime is 13023444213173. The next prime is 13023444213233. The reversal of 13023444213221 is 12231244432031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13023444213221 - 2³⁸ = 12748566306277 is a prime.

It is a super-2 number, since 2×13023444213221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023440213221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8583995 + ... + 9986583.

It is an arithmetic number, because the mean of its divisors is an integer number (879115360200).

Almost surely, 2^{13023444213221} is an apocalyptic number.

It is an amenable number.

13023444213221 is a deficient number, since it is larger than the sum of its proper divisors (1042401549979).

13023444213221 is a wasteful number, since it uses less digits than its factorization.

13023444213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404668.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 13023444213221 its reverse (12231244432031), we get a palindrome (25254688645252).

The spelling of 13023444213221 in words is "thirteen trillion, twenty-three billion, four hundred forty-four million, two hundred thirteen thousand, two hundred twenty-one".