12201201111 has 32 divisors (see below), whose sum is σ = 18197706240. Its totient is φ = 7207308800.

The previous prime is 12201201091. The next prime is 12201201157. The reversal of 12201201111 is 11110210221.

It is a cyclic number.

It is not a de Polignac number, because 12201201111 - 2⁵ = 12201201079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201201011) 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 31 ways as a sum of consecutive naturals, for example, 1610350 + ... + 1617908.

It is an arithmetic number, because the mean of its divisors is an integer number (568678320).

Almost surely, 2^12201201111 is an apocalyptic number.

12201201111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12201201111 is a deficient number, since it is larger than the sum of its proper divisors (5996505129).

12201201111 is a wasteful number, since it uses less digits than its factorization.

12201201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8807.

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

Adding to 12201201111 its reverse (11110210221), we get a palindrome (23311411332).

It can be divided in two parts, 12201 and 201111, that added together give a palindrome (213312).

The spelling of 12201201111 in words is "twelve billion, two hundred one million, two hundred one thousand, one hundred eleven".