124020013331 has 4 divisors (see below), whose sum is σ = 124028067912. Its totient is φ = 124011958752.

The previous prime is 124020013309. The next prime is 124020013379. The reversal of 124020013331 is 133310020421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124020013331 - 2¹⁰ = 124020012307 is a prime.

It is a super-2 number, since 2×124020013331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124020013391) 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, 4004150 + ... + 4035003.

It is an arithmetic number, because the mean of its divisors is an integer number (31007016978).

Almost surely, 2^124020013331 is an apocalyptic number.

124020013331 is a deficient number, since it is larger than the sum of its proper divisors (8054581).

124020013331 is an equidigital number, since it uses as much as digits as its factorization.

124020013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8054580.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 124020013331 its reverse (133310020421), we get a palindrome (257330033752).

The spelling of 124020013331 in words is "one hundred twenty-four billion, twenty million, thirteen thousand, three hundred thirty-one".