112121210 has 16 divisors (see below), whose sum is σ = 206512416. Its totient is φ = 43805328.

The previous prime is 112121209. The next prime is 112121213. The reversal of 112121210 is 12121211.

It is a junction number, because it is equal to n+sod(n) for n = 112121191 and 112121200.

It is not an unprimeable number, because it can be changed into a prime (112121213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 129944 + ... + 130803.

It is an arithmetic number, because the mean of its divisors is an integer number (12907026).

Almost surely, 2^112121210 is an apocalyptic number.

112121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

112121210 is a deficient number, since it is larger than the sum of its proper divisors (94391206).

112121210 is a wasteful number, since it uses less digits than its factorization.

112121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260797.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 112121210 is about 10588.7303299310. The cubic root of 112121210 is about 482.2022790385.

Adding to 112121210 its reverse (12121211), we get a palindrome (124242421).

Subtracting from 112121210 its reverse (12121211), we obtain a palindrome (99999999).

The spelling of 112121210 in words is "one hundred twelve million, one hundred twenty-one thousand, two hundred ten".