221032000320 has 56 divisors (see below), whose sum is σ = 701776604064. Its totient is φ = 58941866496.

The previous prime is 221032000309. The next prime is 221032000331. The reversal of 221032000320 is 23000230122.

It is an interprime number because it is at equal distance from previous prime (221032000309) and next prime (221032000331).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221032000320.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 115119874 + ... + 115121793.

Almost surely, 2^221032000320 is an apocalyptic number.

221032000320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221032000320 is an abundant number, since it is smaller than the sum of its proper divisors (480744603744).

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

221032000320 is a wasteful number, since it uses less digits than its factorization.

221032000320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230241687 (or 230241677 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 221032000320 its reverse (23000230122), we get a palindrome (244032230442).

The spelling of 221032000320 in words is "two hundred twenty-one billion, thirty-two million, three hundred twenty", and thus it is an aban number.