12002002100 has 54 divisors (see below), whose sum is σ = 28627283622. Its totient is φ = 4364360000.

The previous prime is 12002002097. The next prime is 12002002151. The reversal of 12002002100 is 120020021.

It can be written as a sum of positive squares in 3 ways, for example, as 1324086544 + 10677915556 = 36388^2 + 103334^2 .

It is a congruent number.

It is an unprimeable number.

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, 483851 + ... + 508050.

Almost surely, 2^12002002100 is an apocalyptic number.

12002002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002002100 is an abundant number, since it is smaller than the sum of its proper divisors (16625281522).

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

12002002100 is a wasteful number, since it uses less digits than its factorization.

12002002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991937 (or 991919 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 12002002100 its reverse (120020021), we get a palindrome (12122022121).

12002002100 divided by its reverse (120020021) gives a square (100 = 10²).

The spelling of 12002002100 in words is "twelve billion, two million, two thousand, one hundred".