12111102001211 has 4 divisors (see below), whose sum is σ = 12111111427800. Its totient is φ = 12111092574624.

The previous prime is 12111102001151. The next prime is 12111102001301. The reversal of 12111102001211 is 11210020111121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111102001211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111102000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411381 + ... + 5480598.

It is an arithmetic number, because the mean of its divisors is an integer number (3027777856950).

Almost surely, 2^{12111102001211} is an apocalyptic number.

12111102001211 is a deficient number, since it is larger than the sum of its proper divisors (9426589).

12111102001211 is an equidigital number, since it uses as much as digits as its factorization.

12111102001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9426588.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12111102001211 its reverse (11210020111121), we get a palindrome (23321122112332).

The spelling of 12111102001211 in words is "twelve trillion, one hundred eleven billion, one hundred two million, one thousand, two hundred eleven".