121235112 has 48 divisors (see below), whose sum is σ = 332317440. Its totient is φ = 39922848.

The previous prime is 121235111. The next prime is 121235171. The reversal of 121235112 is 211532121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121235111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4168 + ... + 16119.

It is an arithmetic number, because the mean of its divisors is an integer number (6923280).

Almost surely, 2^121235112 is an apocalyptic number.

121235112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121235112 is an abundant number, since it is smaller than the sum of its proper divisors (211082328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121235112 is a wasteful number, since it uses less digits than its factorization.

121235112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20382 (or 20375 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 121235112 is about 11010.6817227636. The cubic root of 121235112 is about 494.9288909179.

Adding to 121235112 its reverse (211532121), we get a palindrome (332767233).

The spelling of 121235112 in words is "one hundred twenty-one million, two hundred thirty-five thousand, one hundred twelve".