21241311033313 has 12 divisors (see below), whose sum is σ = 24709433503572. Its totient is φ = 18206725054560.

The previous prime is 21241311033281. The next prime is 21241311033361. The reversal of 21241311033313 is 31333011314212.

It can be written as a sum of positive squares in 2 ways, for example, as 13856135198689 + 7385175834624 = 3722383^2 + 2717568^2 .

It is not a de Polignac number, because 21241311033313 - 2⁵ = 21241311033281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21241311033013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7178031 + ... + 9695707.

It is an arithmetic number, because the mean of its divisors is an integer number (2059119458631).

Almost surely, 2^{21241311033313} is an apocalyptic number.

It is an amenable number.

21241311033313 is a deficient number, since it is larger than the sum of its proper divisors (3468122470259).

21241311033313 is a wasteful number, since it uses less digits than its factorization.

21241311033313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689872 (or 2689865 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 21241311033313 its reverse (31333011314212), we get a palindrome (52574322347525).

The spelling of 21241311033313 in words is "twenty-one trillion, two hundred forty-one billion, three hundred eleven million, thirty-three thousand, three hundred thirteen".