9900001111 has 96 divisors (see below), whose sum is σ = 13942656000. Its totient is φ = 6977678400.

The previous prime is 9900001103. The next prime is 9900001117. The reversal of 9900001111 is 1111000099.

It is not a de Polignac number, because 9900001111 - 2³ = 9900001103 is a prime.

9900001111 is a modest number, since divided by 1111 gives 99 as remainder.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900001117) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31832646 + ... + 31832956.

It is an arithmetic number, because the mean of its divisors is an integer number (145236000).

Almost surely, 2^9900001111 is an apocalyptic number.

9900001111 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9900001111 is a deficient number, since it is larger than the sum of its proper divisors (4042654889).

9900001111 is a wasteful number, since it uses less digits than its factorization.

9900001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 22.

The square root of 9900001111 is about 99498.7492936469. The cubic root of 9900001111 is about 2147.2292493412.

The spelling of 9900001111 in words is "nine billion, nine hundred million, one thousand, one hundred eleven".