9990100111 has 4 divisors (see below), whose sum is σ = 9996002632. Its totient is φ = 9984197592.

The previous prime is 9990100103. The next prime is 9990100123. The reversal of 9990100111 is 1110010999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9990100111 - 2³ = 9990100103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990100171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2948721 + ... + 2952106.

It is an arithmetic number, because the mean of its divisors is an integer number (2499000658).

Almost surely, 2^9990100111 is an apocalyptic number.

9990100111 is a deficient number, since it is larger than the sum of its proper divisors (5902521).

9990100111 is a wasteful number, since it uses less digits than its factorization.

9990100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5902520.

The product of its (nonzero) digits is 729, while the sum is 31.

The square root of 9990100111 is about 99950.4882979568. The cubic root of 9990100111 is about 2153.7234998138.

The spelling of 9990100111 in words is "nine billion, nine hundred ninety million, one hundred thousand, one hundred eleven".