14037221521 has 4 divisors (see below), whose sum is σ = 14862940452. Its totient is φ = 13211502592.

The previous prime is 14037221501. The next prime is 14037221543. The reversal of 14037221521 is 12512273041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12512273041 = 31 ⋅403621711.

It can be written as a sum of positive squares in 2 ways, for example, as 7821633600 + 6215587921 = 88440^2 + 78839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14037221521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14037221521.

It is not an unprimeable number, because it can be changed into a prime (14037221501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412859440 + ... + 412859473.

It is an arithmetic number, because the mean of its divisors is an integer number (3715735113).

Almost surely, 2^14037221521 is an apocalyptic number.

It is an amenable number.

14037221521 is a deficient number, since it is larger than the sum of its proper divisors (825718931).

14037221521 is an equidigital number, since it uses as much as digits as its factorization.

14037221521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825718930.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 14037221521 its reverse (12512273041), we get a palindrome (26549494562).

The spelling of 14037221521 in words is "fourteen billion, thirty-seven million, two hundred twenty-one thousand, five hundred twenty-one".