221323060 has 48 divisors (see below), whose sum is σ = 532957824. Its totient is φ = 75627648.

The previous prime is 221323049. The next prime is 221323093. The reversal of 221323060 is 60323122.

221323060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 41887 + ... + 46873.

It is an arithmetic number, because the mean of its divisors is an integer number (11103288).

Almost surely, 2^221323060 is an apocalyptic number.

221323060 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 221323060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266478912).

221323060 is an abundant number, since it is smaller than the sum of its proper divisors (311634764).

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

221323060 is a wasteful number, since it uses less digits than its factorization.

221323060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5320 (or 5318 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 221323060 is about 14876.9304629685. The cubic root of 221323060 is about 604.8888168521. Note that the first 4 decimals are identical.

Adding to 221323060 its reverse (60323122), we get a palindrome (281646182).

The spelling of 221323060 in words is "two hundred twenty-one million, three hundred twenty-three thousand, sixty".