2003123122 has 64 divisors (see below), whose sum is σ = 4060594944. Its totient is φ = 715703040.

The previous prime is 2003123099. The next prime is 2003123123. The reversal of 2003123122 is 2213213002.

It is a junction number, because it is equal to n+sod(n) for n = 2003123096 and 2003123105.

It is not an unprimeable number, because it can be changed into a prime (2003123123) 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 31 ways as a sum of consecutive naturals, for example, 311128 + ... + 317500.

It is an arithmetic number, because the mean of its divisors is an integer number (63446796).

Almost surely, 2^2003123122 is an apocalyptic number.

2003123122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2003123122 is an abundant number, since it is smaller than the sum of its proper divisors (2057471822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2003123122 is a wasteful number, since it uses less digits than its factorization.

2003123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2003123122 is about 44756.2634946216. The cubic root of 2003123122 is about 1260.5765233508.

Adding to 2003123122 its reverse (2213213002), we get a palindrome (4216336124).

The spelling of 2003123122 in words is "two billion, three million, one hundred twenty-three thousand, one hundred twenty-two".