2210721166 has 8 divisors (see below), whose sum is σ = 3423052224. Its totient is φ = 1069703760.

The previous prime is 2210721151. The next prime is 2210721167. The reversal of 2210721166 is 6611270122.

2210721166 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210721167) 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, 17828335 + ... + 17828458.

It is an arithmetic number, because the mean of its divisors is an integer number (427881528).

Almost surely, 2^2210721166 is an apocalyptic number.

2210721166 is a deficient number, since it is larger than the sum of its proper divisors (1212331058).

2210721166 is a wasteful number, since it uses less digits than its factorization.

2210721166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35656826.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2210721166 is about 47018.3067113226. The cubic root of 2210721166 is about 1302.7007297692.

Adding to 2210721166 its reverse (6611270122), we get a palindrome (8821991288).

The spelling of 2210721166 in words is "two billion, two hundred ten million, seven hundred twenty-one thousand, one hundred sixty-six".