2220066601 has 4 divisors (see below), whose sum is σ = 2350658772. Its totient is φ = 2089474432.

The previous prime is 2220066593. The next prime is 2220066617. The reversal of 2220066601 is 1066600222.

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 1157632576 + 1062434025 = 34024^2 + 32595^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220066601 - 2³ = 2220066593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220066631) 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, 65296060 + ... + 65296093.

It is an arithmetic number, because the mean of its divisors is an integer number (587664693).

Almost surely, 2^2220066601 is an apocalyptic number.

It is an amenable number.

2220066601 is a deficient number, since it is larger than the sum of its proper divisors (130592171).

2220066601 is a wasteful number, since it uses less digits than its factorization.

2220066601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130592170.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2220066601 is about 47117.5827160095. The cubic root of 2220066601 is about 1304.5337952934.

Adding to 2220066601 its reverse (1066600222), we get a palindrome (3286666823).

The spelling of 2220066601 in words is "two billion, two hundred twenty million, sixty-six thousand, six hundred one".