212540214 has 16 divisors (see below), whose sum is σ = 431425728. Its totient is φ = 69789192.

The previous prime is 212540197. The next prime is 212540219. The reversal of 212540214 is 412045212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212540219) 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, 263952 + ... + 264755.

It is an arithmetic number, because the mean of its divisors is an integer number (26964108).

Almost surely, 2^212540214 is an apocalyptic number.

212540214 is an abundant number, since it is smaller than the sum of its proper divisors (218885514).

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

212540214 is a wasteful number, since it uses less digits than its factorization.

212540214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528779.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 212540214 is about 14578.7590006832. The cubic root of 212540214 is about 596.7792365173.

Adding to 212540214 its reverse (412045212), we get a palindrome (624585426).

The spelling of 212540214 in words is "two hundred twelve million, five hundred forty thousand, two hundred fourteen".