2003123012 has 24 divisors (see below), whose sum is σ = 3828837600. Its totient is φ = 909392960.

The previous prime is 2003123011. The next prime is 2003123029. The reversal of 2003123012 is 2103213002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2003123011) 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 7 ways as a sum of consecutive naturals, for example, 8864 + ... + 63912.

It is an arithmetic number, because the mean of its divisors is an integer number (159534900).

Almost surely, 2^2003123012 is an apocalyptic number.

2003123012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2003123012 is a deficient number, since it is larger than the sum of its proper divisors (1825714588).

2003123012 is a wasteful number, since it uses less digits than its factorization.

2003123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55891 (or 55889 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2003123012 is about 44756.2622657433. The cubic root of 2003123012 is about 1260.5765002762.

Adding to 2003123012 its reverse (2103213002), we get a palindrome (4106336014).

The spelling of 2003123012 in words is "two billion, three million, one hundred twenty-three thousand, twelve".