211112080 has 20 divisors (see below), whose sum is σ = 490835772. Its totient is φ = 84444800.

The previous prime is 211112071. The next prime is 211112081. The reversal of 211112080 is 80211112.

It can be written as a sum of positive squares in 2 ways, for example, as 93779856 + 117332224 = 9684^2 + 10832^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (211112081) 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, 1319371 + ... + 1319530.

Almost surely, 2^211112080 is an apocalyptic number.

211112080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112080 is an abundant number, since it is smaller than the sum of its proper divisors (279723692).

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

211112080 is a wasteful number, since it uses less digits than its factorization.

211112080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638914 (or 2638908 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 211112080 is about 14529.6964868506. The cubic root of 211112080 is about 595.4395734846.

Adding to 211112080 its reverse (80211112), we get a palindrome (291323192).

The spelling of 211112080 in words is "two hundred eleven million, one hundred twelve thousand, eighty".