212240716 has 48 divisors (see below), whose sum is σ = 420910560. Its totient is φ = 93035520.

The previous prime is 212240713. The next prime is 212240729. The reversal of 212240716 is 617042212.

It is a super-2 number, since 2×212240716² = 90092243056385312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212240713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77466 + ... + 80158.

It is an arithmetic number, because the mean of its divisors is an integer number (8768970).

Almost surely, 2^212240716 is an apocalyptic number.

It is an amenable number.

212240716 is a deficient number, since it is larger than the sum of its proper divisors (208669844).

212240716 is a wasteful number, since it uses less digits than its factorization.

212240716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794 (or 2792 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 212240716 is about 14568.4836547940. The cubic root of 212240716 is about 596.4987904411.

Adding to 212240716 its reverse (617042212), we get a palindrome (829282928).

The spelling of 212240716 in words is "two hundred twelve million, two hundred forty thousand, seven hundred sixteen".