121112222 has 24 divisors (see below), whose sum is σ = 230542200. Its totient is φ = 47186160.

The previous prime is 121112203. The next prime is 121112263. The reversal of 121112222 is 222211121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121112197 and 121112206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55097 + ... + 57252.

It is an arithmetic number, because the mean of its divisors is an integer number (9605925).

Almost surely, 2^121112222 is an apocalyptic number.

121112222 is a deficient number, since it is larger than the sum of its proper divisors (109429978).

121112222 is a wasteful number, since it uses less digits than its factorization.

121112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112376 (or 112369 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 121112222 is about 11005.0998178117. The cubic root of 121112222 is about 494.7616061199.

Adding to 121112222 its reverse (222211121), we get a palindrome (343323343).

The spelling of 121112222 in words is "one hundred twenty-one million, one hundred twelve thousand, two hundred twenty-two".