2111311218 has 16 divisors (see below), whose sum is σ = 4233768480. Its totient is φ = 701912736.

The previous prime is 2111311177. The next prime is 2111311219. The reversal of 2111311218 is 8121131112.

It is a junction number, because it is equal to n+sod(n) for n = 2111311194 and 2111311203.

It is not an unprimeable number, because it can be changed into a prime (2111311219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461955 + ... + 466502.

It is an arithmetic number, because the mean of its divisors is an integer number (264610530).

Almost surely, 2^2111311218 is an apocalyptic number.

2111311218 is an abundant number, since it is smaller than the sum of its proper divisors (2122457262).

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

2111311218 is a wasteful number, since it uses less digits than its factorization.

2111311218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928841.

The product of its digits is 96, while the sum is 21.

The square root of 2111311218 is about 45949.0067139650. The cubic root of 2111311218 is about 1282.8742413339.

The spelling of 2111311218 in words is "two billion, one hundred eleven million, three hundred eleven thousand, two hundred eighteen".