9131210212 has 6 divisors (see below), whose sum is σ = 15979617878. Its totient is φ = 4565605104.

The previous prime is 9131210201. The next prime is 9131210219. The reversal of 9131210212 is 2120121319.

It can be written as a sum of positive squares in only one way, i.e., 6767694756 + 2363515456 = 82266^2 + 48616^2 .

It is not an unprimeable number, because it can be changed into a prime (9131210219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1141401273 + ... + 1141401280.

Almost surely, 2^9131210212 is an apocalyptic number.

It is an amenable number.

9131210212 is a deficient number, since it is larger than the sum of its proper divisors (6848407666).

9131210212 is a wasteful number, since it uses less digits than its factorization.

9131210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282802557 (or 2282802555 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 9131210212 is about 95557.3660792301. The cubic root of 9131210212 is about 2090.1435469883.

The spelling of 9131210212 in words is "nine billion, one hundred thirty-one million, two hundred ten thousand, two hundred twelve".