13123132021 has 8 divisors (see below), whose sum is σ = 13842198080. Its totient is φ = 12406903488.

The previous prime is 13123132019. The next prime is 13123132039. The reversal of 13123132021 is 12023132131.

13123132021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13123132021 - 2¹ = 13123132019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13123132021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123132091) 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 7 ways as a sum of consecutive naturals, for example, 699876 + ... + 718381.

It is an arithmetic number, because the mean of its divisors is an integer number (1730274760).

Almost surely, 2^13123132021 is an apocalyptic number.

It is an amenable number.

13123132021 is a deficient number, since it is larger than the sum of its proper divisors (719066059).

13123132021 is a wasteful number, since it uses less digits than its factorization.

13123132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418763.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13123132021 its reverse (12023132131), we get a palindrome (25146264152).

The spelling of 13123132021 in words is "thirteen billion, one hundred twenty-three million, one hundred thirty-two thousand, twenty-one".