13331002032421 has 4 divisors (see below), whose sum is σ = 13331014508844. Its totient is φ = 13330989556000.

The previous prime is 13331002032401. The next prime is 13331002032443. The reversal of 13331002032421 is 12423020013331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2160106272900 + 11170895759521 = 1469730^2 + 3342289^2 .

It is a cyclic number.

It is not a de Polignac number, because 13331002032421 - 2¹³ = 13331002024229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331002032401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4468030 + ... + 6828271.

It is an arithmetic number, because the mean of its divisors is an integer number (3332753627211).

Almost surely, 2^{13331002032421} is an apocalyptic number.

It is an amenable number.

13331002032421 is a deficient number, since it is larger than the sum of its proper divisors (12476423).

13331002032421 is a wasteful number, since it uses less digits than its factorization.

13331002032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476422.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 13331002032421 its reverse (12423020013331), we get a palindrome (25754022045752).

The spelling of 13331002032421 in words is "thirteen trillion, three hundred thirty-one billion, two million, thirty-two thousand, four hundred twenty-one".