221546130 has 64 divisors (see below), whose sum is σ = 574197120. Its totient is φ = 54383616.

The previous prime is 221546111. The next prime is 221546131. The reversal of 221546130 is 31645122.

221546130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221546130.

It is not an unprimeable number, because it can be changed into a prime (221546131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219066 + ... + 220074.

It is an arithmetic number, because the mean of its divisors is an integer number (8971830).

Almost surely, 2^221546130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221546130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287098560).

221546130 is an abundant number, since it is smaller than the sum of its proper divisors (352650990).

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

221546130 is a wasteful number, since it uses less digits than its factorization.

221546130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 221546130 is about 14884.4257531152. The cubic root of 221546130 is about 605.0919697172.

The spelling of 221546130 in words is "two hundred twenty-one million, five hundred forty-six thousand, one hundred thirty".