13021123044 has 24 divisors (see below), whose sum is σ = 30384564448. Its totient is φ = 4340096640.

The previous prime is 13021123019. The next prime is 13021123061. The reversal of 13021123044 is 44032112031.

It is a self number, because there is not a number n which added to its sum of digits gives 13021123044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262299 + ... + 307965.

Almost surely, 2^13021123044 is an apocalyptic number.

It is an amenable number.

13021123044 is an abundant number, since it is smaller than the sum of its proper divisors (17363441404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13021123044 is a wasteful number, since it uses less digits than its factorization.

13021123044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69435 (or 69433 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13021123044 its reverse (44032112031), we get a palindrome (57053235075).

The spelling of 13021123044 in words is "thirteen billion, twenty-one million, one hundred twenty-three thousand, forty-four".