221140130 has 16 divisors (see below), whose sum is σ = 398405304. Its totient is φ = 88377600.

The previous prime is 221140121. The next prime is 221140159. The reversal of 221140130 is 31041122.

It can be written as a sum of positive squares in 4 ways, for example, as 72812089 + 148328041 = 8533^2 + 12179^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804 + ... + 21216.

Almost surely, 2^221140130 is an apocalyptic number.

221140130 is a deficient number, since it is larger than the sum of its proper divisors (177265174).

221140130 is a wasteful number, since it uses less digits than its factorization.

221140130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19621.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 221140130 is about 14870.7810823776. The cubic root of 221140130 is about 604.7221181342.

Adding to 221140130 its reverse (31041122), we get a palindrome (252181252).

The spelling of 221140130 in words is "two hundred twenty-one million, one hundred forty thousand, one hundred thirty".