220330001 has 6 divisors (see below), whose sum is σ = 221021010. Its totient is φ = 219640896.

The previous prime is 220329961. The next prime is 220330007. The reversal of 220330001 is 100033022.

It can be written as a sum of positive squares in only one way, i.e., 125462401 + 94867600 = 11201^2 + 9740^2 .

It is a de Polignac number, because none of the positive numbers 2^k-220330001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220330007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236705 + ... + 237633.

It is an arithmetic number, because the mean of its divisors is an integer number (36836835).

Almost surely, 2^220330001 is an apocalyptic number.

It is an amenable number.

220330001 is a deficient number, since it is larger than the sum of its proper divisors (691009).

220330001 is an frugal number, since it uses more digits than its factorization.

220330001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903 (or 1416 counting only the distinct ones).

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

The square root of 220330001 is about 14843.5171371208. The cubic root of 220330001 is about 603.9827643357.

Adding to 220330001 its reverse (100033022), we get a palindrome (320363023).

The spelling of 220330001 in words is "two hundred twenty million, three hundred thirty thousand, one".