321121112 has 16 divisors (see below), whose sum is σ = 648417840. Its totient is φ = 148209696.

The previous prime is 321121103. The next prime is 321121139. The reversal of 321121112 is 211121123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1543748 + ... + 1543955.

It is an arithmetic number, because the mean of its divisors is an integer number (40526115).

Almost surely, 2^321121112 is an apocalyptic number.

It is an amenable number.

321121112 is an abundant number, since it is smaller than the sum of its proper divisors (327296728).

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

321121112 is a wasteful number, since it uses less digits than its factorization.

321121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087722 (or 3087718 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 321121112 is about 17919.8524547497. The cubic root of 321121112 is about 684.7882287096.

Adding to 321121112 its reverse (211121123), we get a palindrome (532242235).

The spelling of 321121112 in words is "three hundred twenty-one million, one hundred twenty-one thousand, one hundred twelve".