112221111 has 8 divisors (see below), whose sum is σ = 153672304. Its totient is φ = 72792000.

The previous prime is 112221077. The next prime is 112221113. The reversal of 112221111 is 111122211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 112221111 - 2¹⁸ = 111958967 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505390 + ... + 505611.

It is an arithmetic number, because the mean of its divisors is an integer number (19209038).

Almost surely, 2^112221111 is an apocalyptic number.

112221111 is a deficient number, since it is larger than the sum of its proper divisors (41451193).

112221111 is a wasteful number, since it uses less digits than its factorization.

112221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011041.

The product of its digits is 8, while the sum is 12.

The square root of 112221111 is about 10593.4466062750. The cubic root of 112221111 is about 482.3454520373.

Adding to 112221111 its reverse (111122211), we get a palindrome (223343322).

It can be divided in two parts, 1122211 and 11, that multiplied together give a palindrome (12344321).

The spelling of 112221111 in words is "one hundred twelve million, two hundred twenty-one thousand, one hundred eleven".