13311233321021 has 12 divisors (see below), whose sum is σ = 14111133613920. Its totient is φ = 12553153249560.

The previous prime is 13311233320997. The next prime is 13311233321053. The reversal of 13311233321021 is 12012333211331.

It is not a de Polignac number, because 13311233321021 - 2³⁴ = 13294053451837 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 (13311233321521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177166751 + ... + 177241868.

It is an arithmetic number, because the mean of its divisors is an integer number (1175927801160).

Almost surely, 2^{13311233321021} is an apocalyptic number.

It is an amenable number.

13311233321021 is a deficient number, since it is larger than the sum of its proper divisors (799900292899).

13311233321021 is an equidigital number, since it uses as much as digits as its factorization.

13311233321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354408736 (or 354408713 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 13311233321021 its reverse (12012333211331), we get a palindrome (25323566532352).

The spelling of 13311233321021 in words is "thirteen trillion, three hundred eleven billion, two hundred thirty-three million, three hundred twenty-one thousand, twenty-one".