2113218811 has 8 divisors (see below), whose sum is σ = 2309431104. Its totient is φ = 1917690120.

The previous prime is 2113218799. The next prime is 2113218853. The reversal of 2113218811 is 1188123112.

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

It is a cyclic number.

It is not a de Polignac number, because 2113218811 - 2⁹ = 2113218299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2113218811.

It is not an unprimeable number, because it can be changed into a prime (2113218011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164421 + ... + 176806.

It is an arithmetic number, because the mean of its divisors is an integer number (288678888).

Almost surely, 2^2113218811 is an apocalyptic number.

2113218811 is a deficient number, since it is larger than the sum of its proper divisors (196212293).

2113218811 is a wasteful number, since it uses less digits than its factorization.

2113218811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341801.

The product of its digits is 768, while the sum is 28.

The square root of 2113218811 is about 45969.7597448584. The cubic root of 2113218811 is about 1283.2604887121.

The spelling of 2113218811 in words is "two billion, one hundred thirteen million, two hundred eighteen thousand, eight hundred eleven".