211240212 has 12 divisors (see below), whose sum is σ = 492893856. Its totient is φ = 70413400.

The previous prime is 211240207. The next prime is 211240217. The reversal of 211240212 is 212042112.

It is an interprime number because it is at equal distance from previous prime (211240207) and next prime (211240217).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 211240191 and 211240200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211240217) 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, 8801664 + ... + 8801687.

It is an arithmetic number, because the mean of its divisors is an integer number (41074488).

Almost surely, 2^211240212 is an apocalyptic number.

It is an amenable number.

211240212 is an abundant number, since it is smaller than the sum of its proper divisors (281653644).

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

211240212 is a wasteful number, since it uses less digits than its factorization.

211240212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17603358 (or 17603356 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 211240212 is about 14534.1051324118. The cubic root of 211240212 is about 595.5600141422.

Adding to 211240212 its reverse (212042112), we get a palindrome (423282324).

It can be divided in two parts, 2112 and 40212, that added together give a palindrome (42324).

The spelling of 211240212 in words is "two hundred eleven million, two hundred forty thousand, two hundred twelve".