21412520413313 has 2 divisors, whose sum is σ = 21412520413314. Its totient is φ = 21412520413312.

The previous prime is 21412520413303. The next prime is 21412520413331. The reversal of 21412520413313 is 31331402521412.

It is a happy number.

Together with next prime (21412520413331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19203527845489 + 2208992567824 = 4382183^2 + 1486268^2 .

It is a cyclic number.

It is not a de Polignac number, because 21412520413313 - 2²⁰ = 21412519364737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21412520413313.

It is not a weakly prime, because it can be changed into another prime (21412520413303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706260206656 + 10706260206657.

It is an arithmetic number, because the mean of its divisors is an integer number (10706260206657).

Almost surely, 2^{21412520413313} is an apocalyptic number.

It is an amenable number.

21412520413313 is a deficient number, since it is larger than the sum of its proper divisors (1).

21412520413313 is an equidigital number, since it uses as much as digits as its factorization.

21412520413313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 21412520413313 its reverse (31331402521412), we get a palindrome (52743922934725).

The spelling of 21412520413313 in words is "twenty-one trillion, four hundred twelve billion, five hundred twenty million, four hundred thirteen thousand, three hundred thirteen".