112222221 has 32 divisors (see below), whose sum is σ = 162190080. Its totient is φ = 68834304.

The previous prime is 112222183. The next prime is 112222247. The reversal of 112222221 is 122222211.

It is not a de Polignac number, because 112222221 - 2¹⁴ = 112205837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112222261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288295 + ... + 288683.

It is an arithmetic number, because the mean of its divisors is an integer number (5068440).

Almost surely, 2^112222221 is an apocalyptic number.

It is an amenable number.

112222221 is a deficient number, since it is larger than the sum of its proper divisors (49967859).

112222221 is a wasteful number, since it uses less digits than its factorization.

112222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565.

The product of its digits is 64, while the sum is 15.

The square root of 112222221 is about 10593.4989970264. The cubic root of 112222221 is about 482.3470423550.

Adding to 112222221 its reverse (122222211), we get a palindrome (234444432).

The spelling of 112222221 in words is "one hundred twelve million, two hundred twenty-two thousand, two hundred twenty-one".