2666213111 has 4 divisors (see below), whose sum is σ = 2667073800. Its totient is φ = 2665352424.

The previous prime is 2666213083. The next prime is 2666213117. The reversal of 2666213111 is 1113126662.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2666213111 - 2⁶ = 2666213047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666213117) 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, 425681 + ... + 431898.

It is an arithmetic number, because the mean of its divisors is an integer number (666768450).

Almost surely, 2^2666213111 is an apocalyptic number.

2666213111 is a deficient number, since it is larger than the sum of its proper divisors (860689).

2666213111 is an equidigital number, since it uses as much as digits as its factorization.

2666213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860688.

The product of its digits is 2592, while the sum is 29.

The square root of 2666213111 is about 51635.3862288257. The cubic root of 2666213111 is about 1386.6439247598.

Adding to 2666213111 its reverse (1113126662), we get a palindrome (3779339773).

The spelling of 2666213111 in words is "two billion, six hundred sixty-six million, two hundred thirteen thousand, one hundred eleven".