111202212211111 has 16 divisors (see below), whose sum is σ = 127560437176320. Its totient is φ = 94962108172320.

The previous prime is 111202212211061. The next prime is 111202212211141. The reversal of 111202212211111 is 111112212202111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111202212211111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111202212211141) 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, 15490026 + ... + 21502216.

It is an arithmetic number, because the mean of its divisors is an integer number (7972527323520).

Almost surely, 2^{111202212211111} is an apocalyptic number.

111202212211111 is a deficient number, since it is larger than the sum of its proper divisors (16358224965209).

111202212211111 is an equidigital number, since it uses as much as digits as its factorization.

111202212211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6022014.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111202212211111 its reverse (111112212202111), we get a palindrome (222314424413222).

The spelling of 111202212211111 in words is "one hundred eleven trillion, two hundred two billion, two hundred twelve million, two hundred eleven thousand, one hundred eleven".