221003332320 has 96 divisors (see below), whose sum is σ = 710972494848. Its totient is φ = 57680296448.

The previous prime is 221003332279. The next prime is 221003332399. The reversal of 221003332320 is 23233300122.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4875564 + ... + 4920683.

It is an arithmetic number, because the mean of its divisors is an integer number (7405963488).

Almost surely, 2^221003332320 is an apocalyptic number.

221003332320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221003332320 is an abundant number, since it is smaller than the sum of its proper divisors (489969162528).

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

221003332320 is a wasteful number, since it uses less digits than its factorization.

221003332320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9796312 (or 9796304 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 221003332320 its reverse (23233300122), we get a palindrome (244236632442).

The spelling of 221003332320 in words is "two hundred twenty-one billion, three million, three hundred thirty-two thousand, three hundred twenty".