12010020003 has 12 divisors (see below), whose sum is σ = 17675124480. Its totient is φ = 7855610256.

The previous prime is 12010019993. The next prime is 12010020047. The reversal of 12010020003 is 30002001021.

It is a happy number.

It is not a de Polignac number, because 12010020003 - 2²⁴ = 11993242787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12010020053) 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 11 ways as a sum of consecutive naturals, for example, 12588643 + ... + 12589596.

It is an arithmetic number, because the mean of its divisors is an integer number (1472927040).

Almost surely, 2^12010020003 is an apocalyptic number.

12010020003 is a deficient number, since it is larger than the sum of its proper divisors (5665104477).

12010020003 is a wasteful number, since it uses less digits than its factorization.

12010020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25178298 (or 25178295 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 12010020003 its reverse (30002001021), we get a palindrome (42012021024).

The spelling of 12010020003 in words is "twelve billion, ten million, twenty thousand, three".