124122003121 has 4 divisors (see below), whose sum is σ = 127476651892. Its totient is φ = 120767354352.

The previous prime is 124122003119. The next prime is 124122003127. The reversal of 124122003121 is 121300221421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121300221421 = 809 ⋅149938469.

It can be written as a sum of positive squares in 2 ways, for example, as 56792132721 + 67329870400 = 238311^2 + 259480^2 .

It is a cyclic number.

It is not a de Polignac number, because 124122003121 - 2¹ = 124122003119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124122003127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677324330 + ... + 1677324403.

It is an arithmetic number, because the mean of its divisors is an integer number (31869162973).

Almost surely, 2^124122003121 is an apocalyptic number.

It is an amenable number.

124122003121 is a deficient number, since it is larger than the sum of its proper divisors (3354648771).

124122003121 is an equidigital number, since it uses as much as digits as its factorization.

124122003121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354648770.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 124122003121 its reverse (121300221421), we get a palindrome (245422224542).

The spelling of 124122003121 in words is "one hundred twenty-four billion, one hundred twenty-two million, three thousand, one hundred twenty-one".