12102001211209 has 32 divisors (see below), whose sum is σ = 15259119434496. Its totient is φ = 9341018081280.

The previous prime is 12102001211161. The next prime is 12102001211221. The reversal of 12102001211209 is 90211210020121.

It is a cyclic number.

It is not a de Polignac number, because 12102001211209 - 2¹⁵ = 12102001178441 is a prime.

It is a super-2 number, since 2×12102001211209² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12102001211209.

It is not an unprimeable number, because it can be changed into a prime (12102001211269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57453009 + ... + 57663265.

It is an arithmetic number, because the mean of its divisors is an integer number (476847482328).

Almost surely, 2^{12102001211209} is an apocalyptic number.

It is an amenable number.

12102001211209 is a deficient number, since it is larger than the sum of its proper divisors (3157118223287).

12102001211209 is a wasteful number, since it uses less digits than its factorization.

12102001211209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225745.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 12102001211209 in words is "twelve trillion, one hundred two billion, one million, two hundred eleven thousand, two hundred nine".