13320041021 has 4 divisors (see below), whose sum is σ = 15222904032. Its totient is φ = 11417178012.

The previous prime is 13320041017. The next prime is 13320041027. The reversal of 13320041021 is 12014002331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12014002331 = 773 ⋅15542047.

It is a cyclic number.

It is not a de Polignac number, because 13320041021 - 2² = 13320041017 is a prime.

It is a super-2 number, since 2×13320041021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320041027) 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, 951431495 + ... + 951431508.

It is an arithmetic number, because the mean of its divisors is an integer number (3805726008).

Almost surely, 2^13320041021 is an apocalyptic number.

It is an amenable number.

13320041021 is a deficient number, since it is larger than the sum of its proper divisors (1902863011).

13320041021 is an equidigital number, since it uses as much as digits as its factorization.

13320041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902863010.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13320041021 its reverse (12014002331), we get a palindrome (25334043352).

The spelling of 13320041021 in words is "thirteen billion, three hundred twenty million, forty-one thousand, twenty-one".