221010330 has 16 divisors (see below), whose sum is σ = 530424864. Its totient is φ = 58936080.

The previous prime is 221010323. The next prime is 221010331. The reversal of 221010330 is 33010122.

It is a happy number.

221010330 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 (221010331) 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, 3683476 + ... + 3683535.

It is an arithmetic number, because the mean of its divisors is an integer number (33151554).

Almost surely, 2^221010330 is an apocalyptic number.

221010330 is an abundant number, since it is smaller than the sum of its proper divisors (309414534).

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

221010330 is a wasteful number, since it uses less digits than its factorization.

221010330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367021.

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

The square root of 221010330 is about 14866.4161787567. The cubic root of 221010330 is about 604.6037794541.

Adding to 221010330 its reverse (33010122), we get a palindrome (254020452).

The spelling of 221010330 in words is "two hundred twenty-one million, ten thousand, three hundred thirty".