124121121 has 8 divisors (see below), whose sum is σ = 166959840. Its totient is φ = 82014912.

The previous prime is 124121119. The next prime is 124121141. The reversal of 124121121 is 121121421.

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

It is not a de Polignac number, because 124121121 - 2¹ = 124121119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124121121.

It is not an unprimeable number, because it can be changed into a prime (124121141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182731 + ... + 183408.

It is an arithmetic number, because the mean of its divisors is an integer number (20869980).

Almost surely, 2^124121121 is an apocalyptic number.

It is an amenable number.

124121121 is a deficient number, since it is larger than the sum of its proper divisors (42838719).

124121121 is a wasteful number, since it uses less digits than its factorization.

124121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366255.

The product of its digits is 32, while the sum is 15.

The square root of 124121121 is about 11140.9658916990. The cubic root of 124121121 is about 498.8254041432.

Adding to 124121121 its reverse (121121421), we get a palindrome (245242542).

The spelling of 124121121 in words is "one hundred twenty-four million, one hundred twenty-one thousand, one hundred twenty-one".