211112320 has 32 divisors (see below), whose sum is σ = 504691920. Its totient is φ = 84444672.

The previous prime is 211112309. The next prime is 211112329. The reversal of 211112320 is 23211112.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 211112320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164292 + ... + 165571.

Almost surely, 2^211112320 is an apocalyptic number.

211112320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112320 is an abundant number, since it is smaller than the sum of its proper divisors (293579600).

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

211112320 is an equidigital number, since it uses as much as digits as its factorization.

211112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329882 (or 329870 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 211112320 is about 14529.7047457958. The cubic root of 211112320 is about 595.4397991238.

Adding to 211112320 its reverse (23211112), we get a palindrome (234323432).

The spelling of 211112320 in words is "two hundred eleven million, one hundred twelve thousand, three hundred twenty".