211065980 has 24 divisors (see below), whose sum is σ = 457537920. Its totient is φ = 81702720.

The previous prime is 211065977. The next prime is 211066007. The reversal of 211065980 is 89560112.

211065980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169595 + ... + 170834.

It is an arithmetic number, because the mean of its divisors is an integer number (19064080).

Almost surely, 2^211065980 is an apocalyptic number.

211065980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211065980 is an abundant number, since it is smaller than the sum of its proper divisors (246471940).

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

211065980 is a wasteful number, since it uses less digits than its factorization.

211065980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340469 (or 340467 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 211065980 is about 14528.1099940770. The cubic root of 211065980 is about 595.3962287952.

The spelling of 211065980 in words is "two hundred eleven million, sixty-five thousand, nine hundred eighty".