999900111101 has 8 divisors (see below), whose sum is σ = 1012169970360. Its totient is φ = 987653252608.

The previous prime is 999900111029. The next prime is 999900111113. The reversal of 999900111101 is 101111009999.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 435403342201 + 564496768900 = 659851^2 + 751330^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999900111101 - 2¹⁸ = 999899848957 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 (999900111601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5662706 + ... + 5836611.

It is an arithmetic number, because the mean of its divisors is an integer number (126521246295).

Almost surely, 2^999900111101 is an apocalyptic number.

It is an amenable number.

999900111101 is a deficient number, since it is larger than the sum of its proper divisors (12269859259).

999900111101 is a wasteful number, since it uses less digits than its factorization.

999900111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500383.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 999900111101 in words is "nine hundred ninety-nine billion, nine hundred million, one hundred eleven thousand, one hundred one".