221310130 has 16 divisors (see below), whose sum is σ = 400999104. Its totient is φ = 87937200.

The previous prime is 221310127. The next prime is 221310137. The reversal of 221310130 is 31013122.

221310130 is digitally balanced in base 2, 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 221310130.

It is not an unprimeable number, because it can be changed into a prime (221310137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71772 + ... + 74791.

It is an arithmetic number, because the mean of its divisors is an integer number (25062444).

Almost surely, 2^221310130 is an apocalyptic number.

221310130 is a deficient number, since it is larger than the sum of its proper divisors (179688974).

221310130 is a wasteful number, since it uses less digits than its factorization.

221310130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146721.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 221310130 is about 14876.4958911701. The cubic root of 221310130 is about 604.8770371416.

Adding to 221310130 its reverse (31013122), we get a palindrome (252323252).

The spelling of 221310130 in words is "two hundred twenty-one million, three hundred ten thousand, one hundred thirty".