12111122200011 has 4 divisors (see below), whose sum is σ = 16148162933352. Its totient is φ = 8074081466672.

The previous prime is 12111122199989. The next prime is 12111122200013. The reversal of 12111122200011 is 11000222111121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12111122200011 - 2⁶ = 12111122199947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111122200013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018520366666 + ... + 2018520366671.

It is an arithmetic number, because the mean of its divisors is an integer number (4037040733338).

Almost surely, 2^{12111122200011} is an apocalyptic number.

12111122200011 is a deficient number, since it is larger than the sum of its proper divisors (4037040733341).

12111122200011 is an equidigital number, since it uses as much as digits as its factorization.

12111122200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037040733340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12111122200011 its reverse (11000222111121), we get a palindrome (23111344311132).

The spelling of 12111122200011 in words is "twelve trillion, one hundred eleven billion, one hundred twenty-two million, two hundred thousand, eleven".