212137716 has 48 divisors (see below), whose sum is σ = 567848960. Its totient is φ = 60380640.

The previous prime is 212137703. The next prime is 212137721. The reversal of 212137716 is 617731212.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18105 + ... + 27423.

Almost surely, 2^212137716 is an apocalyptic number.

It is an amenable number.

212137716 is an abundant number, since it is smaller than the sum of its proper divisors (355711244).

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

212137716 is a wasteful number, since it uses less digits than its factorization.

212137716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9604 (or 9602 counting only the distinct ones).

The product of its digits is 3528, while the sum is 30.

The square root of 212137716 is about 14564.9481976422. The cubic root of 212137716 is about 596.4022815995.

Adding to 212137716 its reverse (617731212), we get a palindrome (829868928).

The spelling of 212137716 in words is "two hundred twelve million, one hundred thirty-seven thousand, seven hundred sixteen".