212111240 has 32 divisors (see below), whose sum is σ = 520637760. Its totient is φ = 77131200.

The previous prime is 212111219. The next prime is 212111243. The reversal of 212111240 is 42111212.

It is a happy number.

212111240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212111243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240596 + ... + 241475.

It is an arithmetic number, because the mean of its divisors is an integer number (16269930).

Almost surely, 2^212111240 is an apocalyptic number.

212111240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212111240 is an abundant number, since it is smaller than the sum of its proper divisors (308526520).

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

212111240 is a wasteful number, since it uses less digits than its factorization.

212111240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482093 (or 482089 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 212111240 is about 14564.0392748715. The cubic root of 212111240 is about 596.3774690956.

Adding to 212111240 its reverse (42111212), we get a palindrome (254222452).

The spelling of 212111240 in words is "two hundred twelve million, one hundred eleven thousand, two hundred forty".