221032130 has 64 divisors (see below), whose sum is σ = 483822720. Its totient is φ = 71654400.

The previous prime is 221032127. The next prime is 221032151. The reversal of 221032130 is 31230122.

It is a happy number.

221032130 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32420 + ... + 38640.

It is an arithmetic number, because the mean of its divisors is an integer number (7559730).

Almost surely, 2^221032130 is an apocalyptic number.

221032130 is an abundant number, since it is smaller than the sum of its proper divisors (262790590).

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

221032130 is a wasteful number, since it uses less digits than its factorization.

221032130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6275.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221032130 is about 14867.1493568875. The cubic root of 221032130 is about 604.6236577543.

Adding to 221032130 its reverse (31230122), we get a palindrome (252262252).

The spelling of 221032130 in words is "two hundred twenty-one million, thirty-two thousand, one hundred thirty".