12000001002 has 96 divisors (see below), whose sum is σ = 28477491840. Its totient is φ = 3358185600.

The previous prime is 12000000983. The next prime is 12000001043. The reversal of 12000001002 is 20010000021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 471852 + ... + 496632.

It is an arithmetic number, because the mean of its divisors is an integer number (296640540).

Almost surely, 2^12000001002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12000001002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14238745920).

12000001002 is an abundant number, since it is smaller than the sum of its proper divisors (16477490838).

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

12000001002 is a wasteful number, since it uses less digits than its factorization.

12000001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24860 (or 24849 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 12000001002 its reverse (20010000021), we get a palindrome (32010001023).

The spelling of 12000001002 in words is "twelve billion, one thousand, two".