121233112 has 64 divisors (see below), whose sum is σ = 305222400. Its totient is φ = 43597440.

The previous prime is 121233109. The next prime is 121233121. The reversal of 121233112 is 211332121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439 + ... + 15577.

It is an arithmetic number, because the mean of its divisors is an integer number (4769100).

Almost surely, 2^121233112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121233112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152611200).

121233112 is an abundant number, since it is smaller than the sum of its proper divisors (183989288).

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

121233112 is a wasteful number, since it uses less digits than its factorization.

121233112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15176 (or 15172 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 121233112 is about 11010.5909014912. The cubic root of 121233112 is about 494.9261693102.

Adding to 121233112 its reverse (211332121), we get a palindrome (332565233).

Subtracting 121233112 from its reverse (211332121), we obtain a palindrome (90099009).

The spelling of 121233112 in words is "one hundred twenty-one million, two hundred thirty-three thousand, one hundred twelve".