13133220021021 has 4 divisors (see below), whose sum is σ = 17510960028032. Its totient is φ = 8755480014012.

The previous prime is 13133220021007. The next prime is 13133220021037. The reversal of 13133220021021 is 12012002233131.

13133220021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13133220021021 - 2¹⁵ = 13133219988253 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 (13133220021041) 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, 2188870003501 + ... + 2188870003506.

It is an arithmetic number, because the mean of its divisors is an integer number (4377740007008).

Almost surely, 2^{13133220021021} is an apocalyptic number.

It is an amenable number.

13133220021021 is a deficient number, since it is larger than the sum of its proper divisors (4377740007011).

13133220021021 is an equidigital number, since it uses as much as digits as its factorization.

13133220021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377740007010.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13133220021021 its reverse (12012002233131), we get a palindrome (25145222254152).

The spelling of 13133220021021 in words is "thirteen trillion, one hundred thirty-three billion, two hundred twenty million, twenty-one thousand, twenty-one".