124103451221 has 16 divisors (see below), whose sum is σ = 138995201664. Its totient is φ = 110194343424.

The previous prime is 124103451211. The next prime is 124103451299. The reversal of 124103451221 is 122154301421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 124103451221 - 2¹⁴ = 124103434837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124103451211) 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 15 ways as a sum of consecutive naturals, for example, 2145431 + ... + 2202516.

It is an arithmetic number, because the mean of its divisors is an integer number (8687200104).

Almost surely, 2^124103451221 is an apocalyptic number.

It is an amenable number.

124103451221 is a deficient number, since it is larger than the sum of its proper divisors (14891750443).

124103451221 is a wasteful number, since it uses less digits than its factorization.

124103451221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348060.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 124103451221 its reverse (122154301421), we get a palindrome (246257752642).

The spelling of 124103451221 in words is "one hundred twenty-four billion, one hundred three million, four hundred fifty-one thousand, two hundred twenty-one".