221030013312 has 48 divisors (see below), whose sum is σ = 636036890580. Its totient is φ = 73676670720.

The previous prime is 221030013241. The next prime is 221030013319. The reversal of 221030013312 is 213310030122.

221030013312 is a `hidden beast` number, since 22 + 10 + 300 + 1 + 331 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221030013319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95932014 + ... + 95934317.

Almost surely, 2^221030013312 is an apocalyptic number.

It is an amenable number.

221030013312 is an abundant number, since it is smaller than the sum of its proper divisors (415006877268).

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

221030013312 is a wasteful number, since it uses less digits than its factorization.

221030013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191866351 (or 191866336 counting only the distinct ones).

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

Adding to 221030013312 its reverse (213310030122), we get a palindrome (434340043434).

The spelling of 221030013312 in words is "two hundred twenty-one billion, thirty million, thirteen thousand, three hundred twelve".