12001210001 has 48 divisors (see below), whose sum is σ = 13918547520. Its totient is φ = 10256924160.

The previous prime is 12001209943. The next prime is 12001210003. The reversal of 12001210001 is 10001210021.

It is not a de Polignac number, because 12001210001 - 2³⁰ = 10927468177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001210003) by changing a digit.

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, 87600005 + ... + 87600141.

It is an arithmetic number, because the mean of its divisors is an integer number (289969740).

Almost surely, 2^12001210001 is an apocalyptic number.

12001210001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12001210001 is a deficient number, since it is larger than the sum of its proper divisors (1917337519).

12001210001 is a wasteful number, since it uses less digits than its factorization.

12001210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12001210001 its reverse (10001210021), we get a palindrome (22002420022).

The spelling of 12001210001 in words is "twelve billion, one million, two hundred ten thousand, one".