124123221312 has 28 divisors (see below), whose sum is σ = 328409356896. Its totient is φ = 41374407040.

The previous prime is 124123221293. The next prime is 124123221317. The reversal of 124123221312 is 213122321421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124123221317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323237364 + ... + 323237747.

Almost surely, 2^124123221312 is an apocalyptic number.

124123221312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

124123221312 is an abundant number, since it is smaller than the sum of its proper divisors (204286135584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124123221312 is an equidigital number, since it uses as much as digits as its factorization.

124123221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646475126 (or 646475116 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 124123221312 its reverse (213122321421), we get a palindrome (337245542733).

The spelling of 124123221312 in words is "one hundred twenty-four billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred twelve".