12111200211 has 16 divisors (see below), whose sum is σ = 17619402240. Its totient is φ = 7338825120.

The previous prime is 12111200201. The next prime is 12111200237. The reversal of 12111200211 is 11200211121.

It is not a de Polignac number, because 12111200211 - 2⁹ = 12111199699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111200201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177606 + ... + 236148.

It is an arithmetic number, because the mean of its divisors is an integer number (1101212640).

Almost surely, 2^12111200211 is an apocalyptic number.

12111200211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111200211 is a deficient number, since it is larger than the sum of its proper divisors (5508202029).

12111200211 is a wasteful number, since it uses less digits than its factorization.

12111200211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64826.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12111200211 its reverse (11200211121), we get a palindrome (23311411332).

It can be divided in two parts, 121 and 11200211, that multiplied together give a palindrome (1355225531).

The spelling of 12111200211 in words is "twelve billion, one hundred eleven million, two hundred thousand, two hundred eleven".