321012112 has 10 divisors (see below), whose sum is σ = 621960998. Its totient is φ = 160506048.

The previous prime is 321012077. The next prime is 321012113. The reversal of 321012112 is 211210123.

It can be written as a sum of positive squares in only one way, i.e., 267780496 + 53231616 = 16364^2 + 7296^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321012092 and 321012101.

It is not an unprimeable number, because it can be changed into a prime (321012113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10031613 + ... + 10031644.

Almost surely, 2^321012112 is an apocalyptic number.

It is an amenable number.

321012112 is a deficient number, since it is larger than the sum of its proper divisors (300948886).

321012112 is a wasteful number, since it uses less digits than its factorization.

321012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20063265 (or 20063259 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 321012112 is about 17916.8108769390. The cubic root of 321012112 is about 684.7107393957.

Adding to 321012112 its reverse (211210123), we get a palindrome (532222235).

The spelling of 321012112 in words is "three hundred twenty-one million, twelve thousand, one hundred twelve".