9890212012 has 12 divisors (see below), whose sum is σ = 17313071776. Its totient is φ = 4943620080.

The previous prime is 9890211977. The next prime is 9890212039. The reversal of 9890212012 is 2102120989.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 356439 + ... + 383182.

Almost surely, 2^9890212012 is an apocalyptic number.

It is an amenable number.

9890212012 is a deficient number, since it is larger than the sum of its proper divisors (7422859764).

9890212012 is a wasteful number, since it uses less digits than its factorization.

9890212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742968 (or 742966 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 9890212012 is about 99449.5450567774. The cubic root of 9890212012 is about 2146.5212907844.

The spelling of 9890212012 in words is "nine billion, eight hundred ninety million, two hundred twelve thousand, twelve".