123124012133 has 4 divisors (see below), whose sum is σ = 130366601100. Its totient is φ = 115881423168.

The previous prime is 123124012127. The next prime is 123124012181. The reversal of 123124012133 is 331210421321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331210421321 = 13 ⋅25477724717.

It can be written as a sum of positive squares in 2 ways, for example, as 37279114084 + 85844898049 = 193078^2 + 292993^2 .

It is not a de Polignac number, because 123124012133 - 2⁶ = 123124012069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123124012099 and 123124012108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123124012733) 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, 3621294458 + ... + 3621294491.

It is an arithmetic number, because the mean of its divisors is an integer number (32591650275).

Almost surely, 2^123124012133 is an apocalyptic number.

It is an amenable number.

123124012133 is a deficient number, since it is larger than the sum of its proper divisors (7242588967).

123124012133 is an equidigital number, since it uses as much as digits as its factorization.

123124012133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242588966.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 123124012133 its reverse (331210421321), we get a palindrome (454334433454).

The spelling of 123124012133 in words is "one hundred twenty-three billion, one hundred twenty-four million, twelve thousand, one hundred thirty-three".