13220233444 has 24 divisors (see below), whose sum is σ = 25269215328. Its totient is φ = 6001914240.

The previous prime is 13220233391. The next prime is 13220233471. The reversal of 13220233444 is 44433202231.

13220233444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13220233444² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145269 + ... + 218044.

It is an arithmetic number, because the mean of its divisors is an integer number (1052883972).

Almost surely, 2^13220233444 is an apocalyptic number.

It is an amenable number.

13220233444 is a deficient number, since it is larger than the sum of its proper divisors (12048981884).

13220233444 is a wasteful number, since it uses less digits than its factorization.

13220233444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364155 (or 364153 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 13220233444 its reverse (44433202231), we get a palindrome (57653435675).

The spelling of 13220233444 in words is "thirteen billion, two hundred twenty million, two hundred thirty-three thousand, four hundred forty-four".