212702216 has 8 divisors (see below), whose sum is σ = 398816670. Its totient is φ = 106351104.

The previous prime is 212702201. The next prime is 212702239. The reversal of 212702216 is 612207212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 212284900 + 417316 = 14570^2 + 646^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 212702191 and 212702200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13293881 + ... + 13293896.

Almost surely, 2^212702216 is an apocalyptic number.

It is an amenable number.

212702216 is a deficient number, since it is larger than the sum of its proper divisors (186114454).

212702216 is a wasteful number, since it uses less digits than its factorization.

212702216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26587783 (or 26587779 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 212702216 is about 14584.3140394055. The cubic root of 212702216 is about 596.9308233234.

Adding to 212702216 its reverse (612207212), we get a palindrome (824909428).

The spelling of 212702216 in words is "two hundred twelve million, seven hundred two thousand, two hundred sixteen".