221003013312 has 42 divisors (see below), whose sum is σ = 633465235988. Its totient is φ = 73667670912.

The previous prime is 221003013307. The next prime is 221003013379. The reversal of 221003013312 is 213310300122.

221003013312 is a `hidden beast` number, since 22 + 10 + 0 + 301 + 331 + 2 = 666.

221003013312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 191842318 + ... + 191843469.

Almost surely, 2^221003013312 is an apocalyptic number.

It is an amenable number.

221003013312 is an abundant number, since it is smaller than the sum of its proper divisors (412462222676).

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

221003013312 is a wasteful number, since it uses less digits than its factorization.

221003013312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383685805 (or 383685792 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 221003013312 its reverse (213310300122), we get a palindrome (434313313434).

The spelling of 221003013312 in words is "two hundred twenty-one billion, three million, thirteen thousand, three hundred twelve".