211112140 has 24 divisors (see below), whose sum is σ = 446317200. Its totient is φ = 83876928.

The previous prime is 211112129. The next prime is 211112189. The reversal of 211112140 is 41211112.

It is a self number, because there is not a number n which added to its sum of digits gives 211112140.

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, 32442 + ... + 38401.

It is an arithmetic number, because the mean of its divisors is an integer number (18596550).

Almost surely, 2^211112140 is an apocalyptic number.

211112140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112140 is an abundant number, since it is smaller than the sum of its proper divisors (235205060).

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

211112140 is a wasteful number, since it uses less digits than its factorization.

211112140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71001 (or 70999 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 211112140 is about 14529.6985515874. The cubic root of 211112140 is about 595.4396298945.

Adding to 211112140 its reverse (41211112), we get a palindrome (252323252).

The spelling of 211112140 in words is "two hundred eleven million, one hundred twelve thousand, one hundred forty".