221333123312 has 20 divisors (see below), whose sum is σ = 490094773296. Its totient is φ = 94857052800.

The previous prime is 221333123311. The next prime is 221333123327. The reversal of 221333123312 is 213321333122.

221333123312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221333123311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988094189 + ... + 988094412.

Almost surely, 2^221333123312 is an apocalyptic number.

It is an amenable number.

221333123312 is an abundant number, since it is smaller than the sum of its proper divisors (268761649984).

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

221333123312 is a wasteful number, since it uses less digits than its factorization.

221333123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976188616 (or 1976188610 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

Adding to 221333123312 its reverse (213321333122), we get a palindrome (434654456434).

The spelling of 221333123312 in words is "two hundred twenty-one billion, three hundred thirty-three million, one hundred twenty-three thousand, three hundred twelve".