211323330220 has 192 divisors, whose sum is σ = 472851219456. Its totient is φ = 79225896960.

The previous prime is 211323330199. The next prime is 211323330307. The reversal of 211323330220 is 22033323112.

It is a junction number, because it is equal to n+sod(n) for n = 211323330191 and 211323330200.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1072707162 + ... + 1072707358.

It is an arithmetic number, because the mean of its divisors is an integer number (2462766768).

Almost surely, 2^211323330220 is an apocalyptic number.

211323330220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211323330220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236425609728).

211323330220 is an abundant number, since it is smaller than the sum of its proper divisors (261527889236).

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

211323330220 is a wasteful number, since it uses less digits than its factorization.

211323330220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 211323330220 its reverse (22033323112), we get a palindrome (233356653332).

The spelling of 211323330220 in words is "two hundred eleven billion, three hundred twenty-three million, three hundred thirty thousand, two hundred twenty".