211011222018 has 16 divisors (see below), whose sum is σ = 423231681600. Its totient is φ = 70135534416.

The previous prime is 211011222017. The next prime is 211011222041. The reversal of 211011222018 is 810222110112.

It is a junction number, because it is equal to n+sod(n) for n = 211011221985 and 211011222003.

It is not an unprimeable number, because it can be changed into a prime (211011222017) 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, 50382630 + ... + 50386817.

It is an arithmetic number, because the mean of its divisors is an integer number (26451980100).

Almost surely, 2^211011222018 is an apocalyptic number.

211011222018 is an abundant number, since it is smaller than the sum of its proper divisors (212220459582).

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

211011222018 is a wasteful number, since it uses less digits than its factorization.

211011222018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100769801.

The product of its (nonzero) digits is 128, while the sum is 21.

The spelling of 211011222018 in words is "two hundred eleven billion, eleven million, two hundred twenty-two thousand, eighteen".