111201111011211 has 16 divisors (see below), whose sum is σ = 159681370571520. Its totient is φ = 68428032757920.

The previous prime is 111201111011201. The next prime is 111201111011279. The reversal of 111201111011211 is 112110111102111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-111201111011211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111201111011201) 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 15 ways as a sum of consecutive naturals, for example, 70463151 + ... + 72024008.

It is an arithmetic number, because the mean of its divisors is an integer number (9980085660720).

Almost surely, 2^{111201111011211} is an apocalyptic number.

111201111011211 is a deficient number, since it is larger than the sum of its proper divisors (48480259560309).

111201111011211 is a wasteful number, since it uses less digits than its factorization.

111201111011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142507186.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111201111011211 its reverse (112110111102111), we get a palindrome (223311222113322).

The spelling of 111201111011211 in words is "one hundred eleven trillion, two hundred one billion, one hundred eleven million, eleven thousand, two hundred eleven".