211011022218 has 64 divisors (see below), whose sum is σ = 439254264960.
Its totient is φ = 67527398400.
The previous prime is 211011022169. The next prime is 211011022219. The reversal of 211011022218 is 812220110112.
It is a junction number, because it is equal to n+sod(n) for n = 211011022194 and 211011022203.
It is not an unprimeable number, because it can be changed into a prime (211011022219) 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 31 ways as a sum of consecutive naturals, for example, 4596796 + ... + 4642472.
It is an arithmetic number, because the mean of its divisors is an integer number (6863347890).
Almost surely, 2211011022218 is an apocalyptic number.
211011022218 is an abundant number, since it is smaller than the sum of its proper divisors (228243242742).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
211011022218 is a wasteful number, since it uses less digits than its factorization.
211011022218 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 46023.
The product of its (nonzero) digits is 128, while the sum is 21.
The spelling of 211011022218 in words is "two hundred eleven billion, eleven million, twenty-two thousand, two hundred eighteen".