111111022112211 has 48 divisors (see below), whose sum is σ = 183608726071680. Its totient is φ = 66583383894720.

The previous prime is 111111022112137. The next prime is 111111022112231. The reversal of 111111022112211 is 112211220111111.

111111022112211 is a `hidden beast` number, since 1 + 111 + 110 + 221 + 1 + 221 + 1 = 666.

It is not a de Polignac number, because 111111022112211 - 2¹⁷ = 111111021981139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111111022112231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 233289685 + ... + 233765478.

It is an arithmetic number, because the mean of its divisors is an integer number (3825181793160).

Almost surely, 2^{111111022112211} is an apocalyptic number.

111111022112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111111022112211 is a deficient number, since it is larger than the sum of its proper divisors (72497703959469).

111111022112211 is an equidigital number, since it uses as much as digits as its factorization.

111111022112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467055278 (or 467055266 counting only the distinct ones).

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

Adding to 111111022112211 its reverse (112211220111111), we get a palindrome (223322242223322).

The spelling of 111111022112211 in words is "one hundred eleven trillion, one hundred eleven billion, twenty-two million, one hundred twelve thousand, two hundred eleven".