2211012018 has 16 divisors (see below), whose sum is σ = 4913360160. Its totient is φ = 737003988.

The previous prime is 2211011983. The next prime is 2211012019. The reversal of 2211012018 is 8102101122.

2211012018 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2211012019) 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, 20472280 + ... + 20472387.

It is an arithmetic number, because the mean of its divisors is an integer number (307085010).

Almost surely, 2^2211012018 is an apocalyptic number.

2211012018 is an abundant number, since it is smaller than the sum of its proper divisors (2702348142).

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

2211012018 is a wasteful number, since it uses less digits than its factorization.

2211012018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40944678 (or 40944672 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 2211012018 is about 47021.3995750871. The cubic root of 2211012018 is about 1302.7578569039.

The spelling of 2211012018 in words is "two billion, two hundred eleven million, twelve thousand, eighteen".