13044013211021 has 16 divisors (see below), whose sum is σ = 14074186707504. Its totient is φ = 12017675510784.

The previous prime is 13044013211017. The next prime is 13044013211051. The reversal of 13044013211021 is 12011231044031.

It can be written as a sum of positive squares in 8 ways, for example, as 31500925225 + 13012512285796 = 177485^2 + 3607286^2 .

It is a cyclic number.

It is not a de Polignac number, because 13044013211021 - 2² = 13044013211017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044013211051) 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, 35254235 + ... + 35622311.

It is an arithmetic number, because the mean of its divisors is an integer number (879636669219).

Almost surely, 2^{13044013211021} is an apocalyptic number.

It is an amenable number.

13044013211021 is a deficient number, since it is larger than the sum of its proper divisors (1030173496483).

13044013211021 is a wasteful number, since it uses less digits than its factorization.

13044013211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373280.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 13044013211021 its reverse (12011231044031), we get a palindrome (25055244255052).

The spelling of 13044013211021 in words is "thirteen trillion, forty-four billion, thirteen million, two hundred eleven thousand, twenty-one".