211310330220 has 72 divisors (see below), whose sum is σ = 699245099280. Its totient is φ = 51226746240.

The previous prime is 211310330183. The next prime is 211310330233. The reversal of 211310330220 is 22033013112.

211310330220 is a `hidden beast` number, since 2 + 1 + 1 + 310 + 330 + 2 + 20 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 211310330193 and 211310330202.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 53359215 + ... + 53363174.

It is an arithmetic number, because the mean of its divisors is an integer number (9711737490).

Almost surely, 2^211310330220 is an apocalyptic number.

211310330220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211310330220 is an abundant number, since it is smaller than the sum of its proper divisors (487934769060).

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

211310330220 is a wasteful number, since it uses less digits than its factorization.

211310330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106722415 (or 106722410 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 211310330220 its reverse (22033013112), we get a palindrome (233343343332).

The spelling of 211310330220 in words is "two hundred eleven billion, three hundred ten million, three hundred thirty thousand, two hundred twenty".