321222112 has 12 divisors (see below), whose sum is σ = 632406096. Its totient is φ = 160611040.

The previous prime is 321222107. The next prime is 321222127. The reversal of 321222112 is 211222123.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5019064 + ... + 5019127.

It is an arithmetic number, because the mean of its divisors is an integer number (52700508).

Almost surely, 2^321222112 is an apocalyptic number.

321222112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321222112 is a deficient number, since it is larger than the sum of its proper divisors (311183984).

321222112 is a wasteful number, since it uses less digits than its factorization.

321222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10038201 (or 10038193 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 321222112 is about 17922.6703367551. The cubic root of 321222112 is about 684.8600150840.

Adding to 321222112 its reverse (211222123), we get a palindrome (532444235).

The spelling of 321222112 in words is "three hundred twenty-one million, two hundred twenty-two thousand, one hundred twelve".