124220020121 has 8 divisors (see below), whose sum is σ = 124502076000. Its totient is φ = 123938083360.

The previous prime is 124220020087. The next prime is 124220020129. The reversal of 124220020121 is 121020022421.

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

It is a cyclic number.

It is not a de Polignac number, because 124220020121 - 2¹⁰ = 124220019097 is a prime.

It is a super-2 number, since 2×124220020121² (a number of 23 digits) contains 22 as substring.

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 124220020121.

It is not an unprimeable number, because it can be changed into a prime (124220020129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2255450 + ... + 2309868.

It is an arithmetic number, because the mean of its divisors is an integer number (15562759500).

Almost surely, 2^124220020121 is an apocalyptic number.

It is an amenable number.

124220020121 is a deficient number, since it is larger than the sum of its proper divisors (282055879).

124220020121 is an equidigital number, since it uses as much as digits as its factorization.

124220020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59559.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 124220020121 its reverse (121020022421), we get a palindrome (245240042542).

The spelling of 124220020121 in words is "one hundred twenty-four billion, two hundred twenty million, twenty thousand, one hundred twenty-one".