221383360 has 112 divisors (see below), whose sum is σ = 581375520. Its totient is φ = 79626240.

The previous prime is 221383291. The next prime is 221383363. The reversal of 221383360 is 63383122.

It is not an unprimeable number, because it can be changed into a prime (221383363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383392 + ... + 383968.

Almost surely, 2^221383360 is an apocalyptic number.

221383360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221383360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290687760).

221383360 is an abundant number, since it is smaller than the sum of its proper divisors (359992160).

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

221383360 is a wasteful number, since it uses less digits than its factorization.

221383360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 221383360 is about 14878.9569526899. The cubic root of 221383360 is about 604.9437463349.

The spelling of 221383360 in words is "two hundred twenty-one million, three hundred eighty-three thousand, three hundred sixty".