13122001444 has 6 divisors (see below), whose sum is σ = 22963502534. Its totient is φ = 6561000720.

The previous prime is 13122001441. The next prime is 13122001457. The reversal of 13122001444 is 44410022131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13089648100 + 32353344 = 114410^2 + 5688^2 .

It is not an unprimeable number, because it can be changed into a prime (13122001441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640250177 + ... + 1640250184.

Almost surely, 2^13122001444 is an apocalyptic number.

It is an amenable number.

13122001444 is a deficient number, since it is larger than the sum of its proper divisors (9841501090).

13122001444 is a wasteful number, since it uses less digits than its factorization.

13122001444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280500365 (or 3280500363 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 13122001444 its reverse (44410022131), we get a palindrome (57532023575).

The spelling of 13122001444 in words is "thirteen billion, one hundred twenty-two million, one thousand, four hundred forty-four".