13030120021 has 4 divisors (see below), whose sum is σ = 13333146112. Its totient is φ = 12727093932.

The previous prime is 13030119997. The next prime is 13030120063. The reversal of 13030120021 is 12002103031.

13030120021 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, and also an emirpimes, since its reverse is a distinct semiprime: 12002103031 = 37 ⋅324381163.

It is a cyclic number.

It is not a de Polignac number, because 13030120021 - 2³³ = 4440185429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13030119983 and 13030120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13030120421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151512981 + ... + 151513066.

It is an arithmetic number, because the mean of its divisors is an integer number (3333286528).

Almost surely, 2^13030120021 is an apocalyptic number.

It is an amenable number.

13030120021 is a deficient number, since it is larger than the sum of its proper divisors (303026091).

13030120021 is an equidigital number, since it uses as much as digits as its factorization.

13030120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303026090.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13030120021 its reverse (12002103031), we get a palindrome (25032223052).

The spelling of 13030120021 in words is "thirteen billion, thirty million, one hundred twenty thousand, twenty-one".