13124055121 has 16 divisors (see below), whose sum is σ = 13404741840. Its totient is φ = 12846504960.

The previous prime is 13124055103. The next prime is 13124055149. The reversal of 13124055121 is 12155042131.

It can be written as a sum of positive squares in 8 ways, for example, as 124634896 + 12999420225 = 11164^2 + 114015^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13124055121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13124055101) 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, 5752501 + ... + 5754781.

It is an arithmetic number, because the mean of its divisors is an integer number (837796365).

Almost surely, 2^13124055121 is an apocalyptic number.

It is an amenable number.

13124055121 is a deficient number, since it is larger than the sum of its proper divisors (280686719).

13124055121 is a wasteful number, since it uses less digits than its factorization.

13124055121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 13124055121 its reverse (12155042131), we get a palindrome (25279097252).

The spelling of 13124055121 in words is "thirteen billion, one hundred twenty-four million, fifty-five thousand, one hundred twenty-one".