12001001200 has 60 divisors (see below), whose sum is σ = 29321147880. Its totient is φ = 4719028480.

The previous prime is 12001001149. The next prime is 12001001239. The reversal of 12001001200 is 210010021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230659 + ... + 277858.

It is an arithmetic number, because the mean of its divisors is an integer number (488685798).

Almost surely, 2^12001001200 is an apocalyptic number.

12001001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001001200 is an abundant number, since it is smaller than the sum of its proper divisors (17320146680).

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

12001001200 is a wasteful number, since it uses less digits than its factorization.

12001001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508594 (or 508583 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 12001001200 its reverse (210010021), we get a palindrome (12211011221).

The spelling of 12001001200 in words is "twelve billion, one million, one thousand, two hundred".