21211524141013 has 2 divisors, whose sum is σ = 21211524141014. Its totient is φ = 21211524141012.

The previous prime is 21211524141007. The next prime is 21211524141061. The reversal of 21211524141013 is 31014142511212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21145999916484 + 65524224529 = 4598478^2 + 255977^2 .

It is a cyclic number.

It is not a de Polignac number, because 21211524141013 - 2²¹ = 21211522043861 is a prime.

It is a super-3 number, since 3×21211524141013³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21211524541013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605762070506 + 10605762070507.

It is an arithmetic number, because the mean of its divisors is an integer number (10605762070507).

Almost surely, 2^{21211524141013} is an apocalyptic number.

It is an amenable number.

21211524141013 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211524141013 is an equidigital number, since it uses as much as digits as its factorization.

21211524141013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 21211524141013 its reverse (31014142511212), we get a palindrome (52225666652225).

The spelling of 21211524141013 in words is "twenty-one trillion, two hundred eleven billion, five hundred twenty-four million, one hundred forty-one thousand, thirteen".