13312001140021 has 4 divisors (see below), whose sum is σ = 13409169031692. Its totient is φ = 13214833248352.

The previous prime is 13312001140019. The next prime is 13312001140027. The reversal of 13312001140021 is 12004110021331.

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 4857223695921 + 8454777444100 = 2203911^2 + 2907710^2 .

It is a cyclic number.

It is not a de Polignac number, because 13312001140021 - 2¹ = 13312001140019 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 (13312001140027) 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, 48583945630 + ... + 48583945903.

It is an arithmetic number, because the mean of its divisors is an integer number (3352292257923).

Almost surely, 2^{13312001140021} is an apocalyptic number.

It is an amenable number.

13312001140021 is a deficient number, since it is larger than the sum of its proper divisors (97167891671).

13312001140021 is an equidigital number, since it uses as much as digits as its factorization.

13312001140021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97167891670.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 13312001140021 its reverse (12004110021331), we get a palindrome (25316111161352).

The spelling of 13312001140021 in words is "thirteen trillion, three hundred twelve billion, one million, one hundred forty thousand, twenty-one".