221021220130 has 32 divisors (see below), whose sum is σ = 410218603200. Its totient is φ = 85676328000.

The previous prime is 221021220109. The next prime is 221021220139. The reversal of 221021220130 is 31022120122.

It is a happy number.

221021220130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221021220139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097080 + ... + 1282819.

It is an arithmetic number, because the mean of its divisors is an integer number (12819331350).

Almost surely, 2^221021220130 is an apocalyptic number.

221021220130 is a deficient number, since it is larger than the sum of its proper divisors (189197383070).

221021220130 is a wasteful number, since it uses less digits than its factorization.

221021220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380194.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221021220130 its reverse (31022120122), we get a palindrome (252043340252).

The spelling of 221021220130 in words is "two hundred twenty-one billion, twenty-one million, two hundred twenty thousand, one hundred thirty".