124121113021 has 8 divisors (see below), whose sum is σ = 130685166080. Its totient is φ = 117560196288.

The previous prime is 124121113007. The next prime is 124121113043. The reversal of 124121113021 is 120311121421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 124121113021 - 2⁵ = 124121112989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124121113021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124121113091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702621 + ... + 861346.

It is an arithmetic number, because the mean of its divisors is an integer number (16335645760).

Almost surely, 2^124121113021 is an apocalyptic number.

It is an amenable number.

124121113021 is a deficient number, since it is larger than the sum of its proper divisors (6564053059).

124121113021 is a wasteful number, since it uses less digits than its factorization.

124121113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568163.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 124121113021 its reverse (120311121421), we get a palindrome (244432234442).

The spelling of 124121113021 in words is "one hundred twenty-four billion, one hundred twenty-one million, one hundred thirteen thousand, twenty-one".