12011203222211 has 4 divisors (see below), whose sum is σ = 12011211920424. Its totient is φ = 12011194524000.

The previous prime is 12011203222201. The next prime is 12011203222237. The reversal of 12011203222211 is 11222230211021.

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-12011203222211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011203222201) 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, 1766630 + ... + 5209931.

It is an arithmetic number, because the mean of its divisors is an integer number (3002802980106).

Almost surely, 2^{12011203222211} is an apocalyptic number.

12011203222211 is a deficient number, since it is larger than the sum of its proper divisors (8698213).

12011203222211 is an equidigital number, since it uses as much as digits as its factorization.

12011203222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698212.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12011203222211 its reverse (11222230211021), we get a palindrome (23233433433232).

The spelling of 12011203222211 in words is "twelve trillion, eleven billion, two hundred three million, two hundred twenty-two thousand, two hundred eleven".