111121120211211 has 12 divisors (see below), whose sum is σ = 175099946999640. Its totient is φ = 67346133461280.

The previous prime is 111121120211141. The next prime is 111121120211239. The reversal of 111121120211211 is 112112021121111.

111121120211211 is a `hidden beast` number, since 1 + 1 + 1 + 121 + 120 + 211 + 211 = 666.

It is not a de Polignac number, because 111121120211211 - 2¹¹ = 111121120209163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121120211411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561217778746 + ... + 561217778943.

It is an arithmetic number, because the mean of its divisors is an integer number (14591662249970).

Almost surely, 2^{111121120211211} is an apocalyptic number.

111121120211211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111121120211211 is a deficient number, since it is larger than the sum of its proper divisors (63978826788429).

111121120211211 is a wasteful number, since it uses less digits than its factorization.

111121120211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122435557706 (or 1122435557703 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 111121120211211 its reverse (112112021121111), we get a palindrome (223233141332322).

It can be divided in two parts, 11 and 1121120211211, that multiplied together give a palindrome (12332322323321).

The spelling of 111121120211211 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, two hundred eleven".