2101260666 has 8 divisors (see below), whose sum is σ = 4202521344. Its totient is φ = 700420220.

The previous prime is 2101260647. The next prime is 2101260671. The reversal of 2101260666 is 6660621012.

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

2101260666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175105050 + ... + 175105061.

It is an arithmetic number, because the mean of its divisors is an integer number (525315168).

Almost surely, 2^2101260666 is an apocalyptic number.

2101260666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101260666 is a wasteful number, since it uses less digits than its factorization.

2101260666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350210116.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2101260666 is about 45839.5098795788. The cubic root of 2101260666 is about 1280.8353649358.

Adding to 2101260666 its reverse (6660621012), we get a palindrome (8761881678).

The spelling of 2101260666 in words is "two billion, one hundred one million, two hundred sixty thousand, six hundred sixty-six".