123220112 has 20 divisors (see below), whose sum is σ = 244292400. Its totient is φ = 60176928.

The previous prime is 123220103. The next prime is 123220117. The reversal of 123220112 is 211022321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123220117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88862 + ... + 90237.

It is an arithmetic number, because the mean of its divisors is an integer number (12214620).

Almost surely, 2^123220112 is an apocalyptic number.

It is an amenable number.

123220112 is a deficient number, since it is larger than the sum of its proper divisors (121072288).

123220112 is a wasteful number, since it uses less digits than its factorization.

123220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179150 (or 179144 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 123220112 is about 11100.4554861501. The cubic root of 123220112 is about 497.6154620354.

Adding to 123220112 its reverse (211022321), we get a palindrome (334242433).

The spelling of 123220112 in words is "one hundred twenty-three million, two hundred twenty thousand, one hundred twelve".