13124013021 has 24 divisors (see below), whose sum is σ = 21670159680. Its totient is φ = 7497662976.

The previous prime is 13124012999. The next prime is 13124013043. The reversal of 13124013021 is 12031042131.

It is an interprime number because it is at equal distance from previous prime (13124012999) and next prime (13124013043).

It is not a de Polignac number, because 13124013021 - 2⁷ = 13124012893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13124012985 and 13124013003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124013061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272110 + ... + 316688.

It is an arithmetic number, because the mean of its divisors is an integer number (902923320).

Almost surely, 2^13124013021 is an apocalyptic number.

It is an amenable number.

13124013021 is a deficient number, since it is larger than the sum of its proper divisors (8546146659).

13124013021 is a wasteful number, since it uses less digits than its factorization.

13124013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49265 (or 49262 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13124013021 its reverse (12031042131), we get a palindrome (25155055152).

The spelling of 13124013021 in words is "thirteen billion, one hundred twenty-four million, thirteen thousand, twenty-one".