123120203033 has 4 divisors (see below), whose sum is σ = 123935568768. Its totient is φ = 122304837300.

The previous prime is 123120202951. The next prime is 123120203039. The reversal of 123120203033 is 330302021321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 330302021321 = 20327 ⋅16249423.

It is a cyclic number.

It is not a de Polignac number, because 123120203033 - 2³⁰ = 122046461209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123120202996 and 123120203014.

It is not an unprimeable number, because it can be changed into a prime (123120203039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407682641 + ... + 407682942.

It is an arithmetic number, because the mean of its divisors is an integer number (30983892192).

Almost surely, 2^123120203033 is an apocalyptic number.

It is an amenable number.

123120203033 is a deficient number, since it is larger than the sum of its proper divisors (815365735).

123120203033 is an equidigital number, since it uses as much as digits as its factorization.

123120203033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815365734.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123120203033 its reverse (330302021321), we get a palindrome (453422224354).

The spelling of 123120203033 in words is "one hundred twenty-three billion, one hundred twenty million, two hundred three thousand, thirty-three".