221130030 has 64 divisors (see below), whose sum is σ = 581188608. Its totient is φ = 53400960.

The previous prime is 221130001. The next prime is 221130031. The reversal of 221130030 is 30031122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221129988 and 221130015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130031) 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, 95547 + ... + 97833.

It is an arithmetic number, because the mean of its divisors is an integer number (9081072).

Almost surely, 2^221130030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221130030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290594304).

221130030 is an abundant number, since it is smaller than the sum of its proper divisors (360058578).

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

221130030 is a wasteful number, since it uses less digits than its factorization.

221130030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 221130030 is about 14870.4414863850. The cubic root of 221130030 is about 604.7129116243.

Adding to 221130030 its reverse (30031122), we get a palindrome (251161152).

The spelling of 221130030 in words is "two hundred twenty-one million, one hundred thirty thousand, thirty".