112121400 has 48 divisors (see below), whose sum is σ = 347578200. Its totient is φ = 29898880.

The previous prime is 112121381. The next prime is 112121407. The reversal of 112121400 is 4121211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121407) 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, 92835 + ... + 94034.

Almost surely, 2^112121400 is an apocalyptic number.

112121400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112121400 is an abundant number, since it is smaller than the sum of its proper divisors (235456800).

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

112121400 is a wasteful number, since it uses less digits than its factorization.

112121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186888 (or 186879 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 112121400 is about 10588.7393017299. The cubic root of 112121400 is about 482.2025514175.

Adding to 112121400 its reverse (4121211), we get a palindrome (116242611).

The spelling of 112121400 in words is "one hundred twelve million, one hundred twenty-one thousand, four hundred".