123123021203 has 48 divisors (see below), whose sum is σ = 164765352960. Its totient is φ = 89734215168.

The previous prime is 123123021173. The next prime is 123123021293. The reversal of 123123021203 is 302120321321.

It is not a de Polignac number, because 123123021203 - 2¹⁰ = 123123020179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123123021293) 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 47 ways as a sum of consecutive naturals, for example, 880088 + ... + 1010346.

It is an arithmetic number, because the mean of its divisors is an integer number (3432611520).

Almost surely, 2^123123021203 is an apocalyptic number.

123123021203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123123021203 is a deficient number, since it is larger than the sum of its proper divisors (41642331757).

123123021203 is a wasteful number, since it uses less digits than its factorization.

123123021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130356 (or 130343 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123123021203 its reverse (302120321321), we get a palindrome (425243342524).

The spelling of 123123021203 in words is "one hundred twenty-three billion, one hundred twenty-three million, twenty-one thousand, two hundred three".