13313203011021 has 4 divisors (see below), whose sum is σ = 17750937348032. Its totient is φ = 8875468674012.

The previous prime is 13313203010971. The next prime is 13313203011037. The reversal of 13313203011021 is 12011030231331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13313203011021 - 2¹³ = 13313203002829 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 (13313203016021) 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, 2218867168501 + ... + 2218867168506.

It is an arithmetic number, because the mean of its divisors is an integer number (4437734337008).

Almost surely, 2^{13313203011021} is an apocalyptic number.

It is an amenable number.

13313203011021 is a deficient number, since it is larger than the sum of its proper divisors (4437734337011).

13313203011021 is an equidigital number, since it uses as much as digits as its factorization.

13313203011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437734337010.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 13313203011021 its reverse (12011030231331), we get a palindrome (25324233242352).

The spelling of 13313203011021 in words is "thirteen trillion, three hundred thirteen billion, two hundred three million, eleven thousand, twenty-one".