2211800066 has 8 divisors (see below), whose sum is σ = 3791657280. Its totient is φ = 947914308.

The previous prime is 2211800057. The next prime is 2211800069. The reversal of 2211800066 is 6600081122.

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

It is not an unprimeable number, because it can be changed into a prime (2211800069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78992846 + ... + 78992873.

It is an arithmetic number, because the mean of its divisors is an integer number (473957160).

Almost surely, 2^2211800066 is an apocalyptic number.

2211800066 is a deficient number, since it is larger than the sum of its proper divisors (1579857214).

2211800066 is a wasteful number, since it uses less digits than its factorization.

2211800066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157985728.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2211800066 is about 47029.7785025615. The cubic root of 2211800066 is about 1302.9126146602.

Adding to 2211800066 its reverse (6600081122), we get a palindrome (8811881188).

The spelling of 2211800066 in words is "two billion, two hundred eleven million, eight hundred thousand, sixty-six".