2102211218 has 16 divisors (see below), whose sum is σ = 3301361280. Its totient is φ = 1002631056.

The previous prime is 2102211217. The next prime is 2102211269. The reversal of 2102211218 is 8121122012.

It is a self number, because there is not a number n which added to its sum of digits gives 2102211218.

It is not an unprimeable number, because it can be changed into a prime (2102211217) 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, 213530 + ... + 223157.

It is an arithmetic number, because the mean of its divisors is an integer number (206335080).

Almost surely, 2^2102211218 is an apocalyptic number.

2102211218 is a deficient number, since it is larger than the sum of its proper divisors (1199150062).

2102211218 is a wasteful number, since it uses less digits than its factorization.

2102211218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436801.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 2102211218 is about 45849.8769682101. The cubic root of 2102211218 is about 1281.0284739418.

The spelling of 2102211218 in words is "two billion, one hundred two million, two hundred eleven thousand, two hundred eighteen".