321223532112 has 120 divisors (see below), whose sum is σ = 1072566172800. Its totient is φ = 91778145984.

The previous prime is 321223532101. The next prime is 321223532117. The reversal of 321223532112 is 211235322123.

321223532112 is a `hidden beast` number, since 3 + 2 + 12 + 2 + 3 + 532 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321223532117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7566312 + ... + 7608647.

It is an arithmetic number, because the mean of its divisors is an integer number (8938051440).

Almost surely, 2^321223532112 is an apocalyptic number.

It is an amenable number.

321223532112 is an abundant number, since it is smaller than the sum of its proper divisors (751342640688).

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

321223532112 is a wasteful number, since it uses less digits than its factorization.

321223532112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15174990 (or 15174971 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

Adding to 321223532112 its reverse (211235322123), we get a palindrome (532458854235).

The spelling of 321223532112 in words is "three hundred twenty-one billion, two hundred twenty-three million, five hundred thirty-two thousand, one hundred twelve".