12002003100 has 54 divisors (see below), whose sum is σ = 37619614760. Its totient is φ = 3200533920.

The previous prime is 12002003099. The next prime is 12002003107. The reversal of 12002003100 is 130020021.

It is a happy number.

It is a super-2 number, since 2×12002003100² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002003107) 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 17 ways as a sum of consecutive naturals, for example, 6666880 + ... + 6668679.

Almost surely, 2^12002003100 is an apocalyptic number.

12002003100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002003100 is an abundant number, since it is smaller than the sum of its proper divisors (25617611660).

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

12002003100 is a wasteful number, since it uses less digits than its factorization.

12002003100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13335579 (or 13335569 counting only the distinct ones).

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

Adding to 12002003100 its reverse (130020021), we get a palindrome (12132023121).

The spelling of 12002003100 in words is "twelve billion, two million, three thousand, one hundred".