211110000220 has 96 divisors (see below), whose sum is σ = 527907340800. Its totient is φ = 69381736704.

The previous prime is 211110000187. The next prime is 211110000229. The reversal of 211110000220 is 22000011112.

211110000220 is digitally balanced in base 2, because in such base 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 (10).

It is a junction number, because it is equal to n+sod(n) for n = 211110000197 and 211110000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211110000229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377299 + ... + 751381.

It is an arithmetic number, because the mean of its divisors is an integer number (5499034800).

Almost surely, 2^211110000220 is an apocalyptic number.

211110000220 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 211110000220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263953670400).

211110000220 is an abundant number, since it is smaller than the sum of its proper divisors (316797340580).

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

211110000220 is a wasteful number, since it uses less digits than its factorization.

211110000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374267 (or 374265 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211110000220 its reverse (22000011112), we get a palindrome (233110011332).

The spelling of 211110000220 in words is "two hundred eleven billion, one hundred ten million, two hundred twenty", and thus it is an aban number.