220266001 has 4 divisors (see below), whose sum is σ = 222286900. Its totient is φ = 218245104.

The previous prime is 220265987. The next prime is 220266023. The reversal of 220266001 is 100662022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156250000 + 64016001 = 12500^2 + 8001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220266001 is a prime.

It is a super-2 number, since 2×220266001² = 97034222393064002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220266001.

It is not an unprimeable number, because it can be changed into a prime (220266071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010286 + ... + 1010503.

It is an arithmetic number, because the mean of its divisors is an integer number (55571725).

Almost surely, 2^220266001 is an apocalyptic number.

It is an amenable number.

220266001 is a deficient number, since it is larger than the sum of its proper divisors (2020899).

220266001 is a wasteful number, since it uses less digits than its factorization.

220266001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020898.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 220266001 is about 14841.3611572524. The cubic root of 220266001 is about 603.9242783676.

The spelling of 220266001 in words is "two hundred twenty million, two hundred sixty-six thousand, one".