9912001900 has 18 divisors (see below), whose sum is σ = 21509044340. Its totient is φ = 3964800720.

The previous prime is 9912001889. The next prime is 9912001919. The reversal of 9912001900 is 91002199.

9912001900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9912001900² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49559910 + ... + 49560109.

Almost surely, 2^9912001900 is an apocalyptic number.

It is an amenable number.

9912001900 is an abundant number, since it is smaller than the sum of its proper divisors (11597042440).

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

9912001900 is a wasteful number, since it uses less digits than its factorization.

9912001900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99120033 (or 99120026 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 9912001900 is about 99559.0372593066. The cubic root of 9912001900 is about 2148.0965233175.

The spelling of 9912001900 in words is "nine billion, nine hundred twelve million, one thousand, nine hundred".