12002109972 has 48 divisors (see below), whose sum is σ = 28469933184. Its totient is φ = 3934800000.

The previous prime is 12002109971. The next prime is 12002109979. The reversal of 12002109972 is 27990120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002109971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150222 + ... + 215802.

It is an arithmetic number, because the mean of its divisors is an integer number (593123608).

Almost surely, 2^12002109972 is an apocalyptic number.

12002109972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12002109972 is an abundant number, since it is smaller than the sum of its proper divisors (16467823212).

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

12002109972 is a wasteful number, since it uses less digits than its factorization.

12002109972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65840 (or 65838 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

Adding to 12002109972 its reverse (27990120021), we get a palindrome (39992229993).

The spelling of 12002109972 in words is "twelve billion, two million, one hundred nine thousand, nine hundred seventy-two".