21034104220013 has 2 divisors, whose sum is σ = 21034104220014. Its totient is φ = 21034104220012.

The previous prime is 21034104219983. The next prime is 21034104220109. The reversal of 21034104220013 is 31002240143012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19228593341764 + 1805510878249 = 4385042^2 + 1343693^2 .

It is a cyclic number.

It is not a de Polignac number, because 21034104220013 - 2²⁸ = 21033835784557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21034104222013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517052110006 + 10517052110007.

It is an arithmetic number, because the mean of its divisors is an integer number (10517052110007).

Almost surely, 2^{21034104220013} is an apocalyptic number.

It is an amenable number.

21034104220013 is a deficient number, since it is larger than the sum of its proper divisors (1).

21034104220013 is an equidigital number, since it uses as much as digits as its factorization.

21034104220013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21034104220013 its reverse (31002240143012), we get a palindrome (52036344363025).

The spelling of 21034104220013 in words is "twenty-one trillion, thirty-four billion, one hundred four million, two hundred twenty thousand, thirteen".