14130215521 has 2 divisors, whose sum is σ = 14130215522. Its totient is φ = 14130215520.

The previous prime is 14130215503. The next prime is 14130215543. The reversal of 14130215521 is 12551203141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14122707921 + 7507600 = 118839^2 + 2740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14130215521 is a prime.

It is not a weakly prime, because it can be changed into another prime (14130215321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7065107760 + 7065107761.

It is an arithmetic number, because the mean of its divisors is an integer number (7065107761).

Almost surely, 2^14130215521 is an apocalyptic number.

It is an amenable number.

14130215521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14130215521 is an equidigital number, since it uses as much as digits as its factorization.

14130215521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 14130215521 its reverse (12551203141), we get a palindrome (26681418662).

The spelling of 14130215521 in words is "fourteen billion, one hundred thirty million, two hundred fifteen thousand, five hundred twenty-one".