13124203421 has 16 divisors (see below), whose sum is σ = 15079434240. Its totient is φ = 11189216880.

The previous prime is 13124203399. The next prime is 13124203423. The reversal of 13124203421 is 12430242131.

It is a cyclic number.

It is not a de Polignac number, because 13124203421 - 2¹⁰ = 13124202397 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 (13124203423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054010 + ... + 1066388.

It is an arithmetic number, because the mean of its divisors is an integer number (942464640).

Almost surely, 2^13124203421 is an apocalyptic number.

It is an amenable number.

13124203421 is a deficient number, since it is larger than the sum of its proper divisors (1955230819).

13124203421 is a wasteful number, since it uses less digits than its factorization.

13124203421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13184.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13124203421 its reverse (12430242131), we get a palindrome (25554445552).

The spelling of 13124203421 in words is "thirteen billion, one hundred twenty-four million, two hundred three thousand, four hundred twenty-one".