212145716 has 36 divisors (see below), whose sum is σ = 401839200. Its totient is φ = 97726176.

The previous prime is 212145709. The next prime is 212145751. The reversal of 212145716 is 617541212.

212145716 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103025 + ... + 105063.

It is an arithmetic number, because the mean of its divisors is an integer number (11162200).

Almost surely, 2^212145716 is an apocalyptic number.

It is an amenable number.

212145716 is a deficient number, since it is larger than the sum of its proper divisors (189693484).

212145716 is a wasteful number, since it uses less digits than its factorization.

212145716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136 (or 2097 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 212145716 is about 14565.2228269944. Note that the first 3 decimals coincide. The cubic root of 212145716 is about 596.4097785507.

Adding to 212145716 its reverse (617541212), we get a palindrome (829686928).

The spelling of 212145716 in words is "two hundred twelve million, one hundred forty-five thousand, seven hundred sixteen".