124313231221 has 16 divisors (see below), whose sum is σ = 134320204800. Its totient is φ = 115017357504.

The previous prime is 124313231219. The next prime is 124313231233. The reversal of 124313231221 is 122132313421.

It is not a de Polignac number, because 124313231221 - 2¹ = 124313231219 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 (124313231291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75436 + ... + 504298.

It is an arithmetic number, because the mean of its divisors is an integer number (8395012800).

Almost surely, 2^124313231221 is an apocalyptic number.

It is an amenable number.

124313231221 is a deficient number, since it is larger than the sum of its proper divisors (10006973579).

124313231221 is an frugal number, since it uses more digits than its factorization.

124313231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428973 (or 428939 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 124313231221 its reverse (122132313421), we get a palindrome (246445544642).

The spelling of 124313231221 in words is "one hundred twenty-four billion, three hundred thirteen million, two hundred thirty-one thousand, two hundred twenty-one".