9111002001 has 32 divisors (see below), whose sum is σ = 12617337600. Its totient is φ = 5843819520.

The previous prime is 9111001997. The next prime is 9111002023. The reversal of 9111002001 is 1002001119.

It is not a de Polignac number, because 9111002001 - 2² = 9111001997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9111002051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5330335 + ... + 5332043.

It is an arithmetic number, because the mean of its divisors is an integer number (394291800).

Almost surely, 2^9111002001 is an apocalyptic number.

It is an amenable number.

9111002001 is a deficient number, since it is larger than the sum of its proper divisors (3506335599).

9111002001 is a wasteful number, since it uses less digits than its factorization.

9111002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 9111002001 is about 95451.5688765774. The cubic root of 9111002001 is about 2088.6005146077.

The spelling of 9111002001 in words is "nine billion, one hundred eleven million, two thousand, one".