12021012003 has 32 divisors (see below), whose sum is σ = 21520138752. Its totient is φ = 5764320000.

The previous prime is 12021011999. The next prime is 12021012007. The reversal of 12021012003 is 30021012021.

It is an interprime number because it is at equal distance from previous prime (12021011999) and next prime (12021012007).

It is not a de Polignac number, because 12021012003 - 2² = 12021011999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12021012003.

It is not an unprimeable number, because it can be changed into a prime (12021012007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1998498 + ... + 2004503.

It is an arithmetic number, because the mean of its divisors is an integer number (672504336).

Almost surely, 2^12021012003 is an apocalyptic number.

12021012003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12021012003 is a deficient number, since it is larger than the sum of its proper divisors (9499126749).

12021012003 is a wasteful number, since it uses less digits than its factorization.

12021012003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003035.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12021012003 its reverse (30021012021), we get a palindrome (42042024024).

The spelling of 12021012003 in words is "twelve billion, twenty-one million, twelve thousand, three".