221030030 has 24 divisors (see below), whose sum is σ = 430815672. Its totient is φ = 81610464.

The previous prime is 221030009. The next prime is 221030053. The reversal of 221030030 is 30030122.

221030030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×221030030³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221029993 and 221030020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63704 + ... + 67083.

It is an arithmetic number, because the mean of its divisors is an integer number (17950653).

Almost surely, 2^221030030 is an apocalyptic number.

221030030 is a deficient number, since it is larger than the sum of its proper divisors (209785642).

221030030 is a wasteful number, since it uses less digits than its factorization.

221030030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130820 (or 130807 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 221030030 is about 14867.0787312101. The cubic root of 221030030 is about 604.6217429290.

Adding to 221030030 its reverse (30030122), we get a palindrome (251060152).

The spelling of 221030030 in words is "two hundred twenty-one million, thirty thousand, thirty".