124122121 has 4 divisors (see below), whose sum is σ = 124450000. Its totient is φ = 123794244.

The previous prime is 124122077. The next prime is 124122127. The reversal of 124122121 is 121221421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124122121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124122095 and 124122104.

It is not an unprimeable number, because it can be changed into a prime (124122127) 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, 163371 + ... + 164128.

It is an arithmetic number, because the mean of its divisors is an integer number (31112500).

Almost surely, 2^124122121 is an apocalyptic number.

It is an amenable number.

124122121 is a deficient number, since it is larger than the sum of its proper divisors (327879).

124122121 is an equidigital number, since it uses as much as digits as its factorization.

124122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327878.

The product of its digits is 64, while the sum is 16.

The square root of 124122121 is about 11141.0107710207. The cubic root of 124122121 is about 498.8267437596.

Adding to 124122121 its reverse (121221421), we get a palindrome (245343542).

The spelling of 124122121 in words is "one hundred twenty-four million, one hundred twenty-two thousand, one hundred twenty-one".