9901120001 has 4 divisors (see below), whose sum is σ = 10422231600. Its totient is φ = 9380008404.

The previous prime is 9901119983. The next prime is 9901120027. The reversal of 9901120001 is 1000211099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9901120001 - 2¹⁰ = 9901118977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9901120051) 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 in 3 ways as a sum of consecutive naturals, for example, 260555771 + ... + 260555808.

It is an arithmetic number, because the mean of its divisors is an integer number (2605557900).

Almost surely, 2^9901120001 is an apocalyptic number.

It is an amenable number.

9901120001 is a deficient number, since it is larger than the sum of its proper divisors (521111599).

9901120001 is a wasteful number, since it uses less digits than its factorization.

9901120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521111598.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 9901120001 is about 99504.3717682796. The cubic root of 9901120001 is about 2147.3101389897.

The spelling of 9901120001 in words is "nine billion, nine hundred one million, one hundred twenty thousand, one".