111222210210111 has 256 divisors, whose sum is σ = 224584507392000. Its totient is φ = 52529061012480.

The previous prime is 111222210209963. The next prime is 111222210210121. The reversal of 111222210210111 is 111012012222111.

It is a happy number.

111222210210111 is a `hidden beast` number, since 1 + 1 + 122 + 221 + 0 + 210 + 111 = 666.

It is not a de Polignac number, because 111222210210111 - 2⁹ = 111222210209599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222210210121) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 873205716 + ... + 873333078.

It is an arithmetic number, because the mean of its divisors is an integer number (877283232000).

Almost surely, 2^{111222210210111} is an apocalyptic number.

111222210210111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111222210210111 is an abundant number, since it is smaller than the sum of its proper divisors (113362297181889).

111222210210111 is a wasteful number, since it uses less digits than its factorization.

111222210210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127891 (or 127885 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111222210210111 its reverse (111012012222111), we get a palindrome (222234222432222).

The spelling of 111222210210111 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred ten million, two hundred ten thousand, one hundred eleven".