13313311113021 has 4 divisors (see below), whose sum is σ = 17751081484032. Its totient is φ = 8875540742012.

The previous prime is 13313311112987. The next prime is 13313311113023. The reversal of 13313311113021 is 12031111331331.

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 a cyclic number.

It is not a de Polignac number, because 13313311113021 - 2³¹ = 13311163629373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13313311112982 and 13313311113000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313311113023) 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, 2218885185501 + ... + 2218885185506.

It is an arithmetic number, because the mean of its divisors is an integer number (4437770371008).

Almost surely, 2^{13313311113021} is an apocalyptic number.

It is an amenable number.

13313311113021 is a deficient number, since it is larger than the sum of its proper divisors (4437770371011).

13313311113021 is an equidigital number, since it uses as much as digits as its factorization.

13313311113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437770371010.

The product of its (nonzero) digits is 486, while the sum is 24.

Adding to 13313311113021 its reverse (12031111331331), we get a palindrome (25344422444352).

The spelling of 13313311113021 in words is "thirteen trillion, three hundred thirteen billion, three hundred eleven million, one hundred thirteen thousand, twenty-one".