220000001 has 8 divisors (see below), whose sum is σ = 237969984. Its totient is φ = 202179600.

The previous prime is 219999919. The next prime is 220000013. The reversal of 220000001 is 100000022.

220000001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220000001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220000001.

It is not an unprimeable number, because it can be changed into a prime (220000051) 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, 34325 + ... + 40226.

It is an arithmetic number, because the mean of its divisors is an integer number (29746248).

Almost surely, 2^220000001 is an apocalyptic number.

It is an amenable number.

220000001 is a deficient number, since it is larger than the sum of its proper divisors (17969983).

220000001 is a wasteful number, since it uses less digits than its factorization.

220000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74791.

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 220000001 is about 14832.3970079013. The cubic root of 220000001 is about 603.6810745944.

Adding to 220000001 its reverse (100000022), we get a palindrome (320000023).

The spelling of 220000001 in words is "two hundred twenty million, one", and thus it is an aban number.