12270112 has 48 divisors (see below), whose sum is σ = 25189920. Its totient is φ = 5879808.

The previous prime is 12270101. The next prime is 12270113. The reversal of 12270112 is 21107221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (12270113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126448 + ... + 126544.

It is an arithmetic number, because the mean of its divisors is an integer number (524790).

Almost surely, 2^12270112 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 12270112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12594960).

12270112 is an abundant number, since it is smaller than the sum of its proper divisors (12919808).

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

12270112 is an equidigital number, since it uses as much as digits as its factorization.

12270112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 12270112 is about 3502.8719645457. The cubic root of 12270112 is about 230.6479022161.

Adding to 12270112 its reverse (21107221), we get a palindrome (33377333).

The spelling of 12270112 in words is "twelve million, two hundred seventy thousand, one hundred twelve".