211000220 has 48 divisors (see below), whose sum is σ = 455262528. Its totient is φ = 82114560.

The previous prime is 211000217. The next prime is 211000247. The reversal of 211000220 is 22000112.

It is a junction number, because it is equal to n+sod(n) for n = 211000198 and 211000207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117449 + ... + 119231.

It is an arithmetic number, because the mean of its divisors is an integer number (9484636).

Almost surely, 2^211000220 is an apocalyptic number.

211000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211000220 is an abundant number, since it is smaller than the sum of its proper divisors (244262308).

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

211000220 is a wasteful number, since it uses less digits than its factorization.

211000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950 (or 1948 counting only the distinct ones).

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

The square root of 211000220 is about 14525.8466190443. The cubic root of 211000220 is about 595.3343882230.

Adding to 211000220 its reverse (22000112), we get a palindrome (233000332).

The spelling of 211000220 in words is "two hundred eleven million, two hundred twenty", and thus it is an aban number.