121111112 has 16 divisors (see below), whose sum is σ = 227631600. Its totient is φ = 60409360.

The previous prime is 121111103. The next prime is 121111121. The reversal of 121111112 is 211111121.

It is an interprime number because it is at equal distance from previous prime (121111103) and next prime (121111121).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121111093 and 121111102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14714 + ... + 21417.

It is an arithmetic number, because the mean of its divisors is an integer number (14226975).

Almost surely, 2^121111112 is an apocalyptic number.

It is an amenable number.

121111112 is a deficient number, since it is larger than the sum of its proper divisors (106520488).

121111112 is a wasteful number, since it uses less digits than its factorization.

121111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36556 (or 36552 counting only the distinct ones).

The product of its digits is 4, while the sum is 11.

The square root of 121111112 is about 11005.0493865316. The cubic root of 121111112 is about 494.7600946097.

Adding to 121111112 its reverse (211111121), we get a palindrome (332222233).

Subtracting 121111112 from its reverse (211111121), we obtain a palindrome (90000009).

The spelling of 121111112 in words is "one hundred twenty-one million, one hundred eleven thousand, one hundred twelve".