99999010111001 has 4 divisors (see below), whose sum is σ = 100155014807604. Its totient is φ = 99843005414400.

The previous prime is 99999010110983. The next prime is 99999010111019. The reversal of 99999010111001 is 10011101099999.

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

It is an interprime number because it is at equal distance from previous prime (99999010110983) and next prime (99999010111019).

It can be written as a sum of positive squares in 2 ways, for example, as 61592296901776 + 38406713209225 = 7848076^2 + 6197315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99999010111001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99999010111201) 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, 78002347340 + ... + 78002348621.

It is an arithmetic number, because the mean of its divisors is an integer number (25038753701901).

Almost surely, 2^{99999010111001} is an apocalyptic number.

It is an amenable number.

99999010111001 is a deficient number, since it is larger than the sum of its proper divisors (156004696603).

99999010111001 is a wasteful number, since it uses less digits than its factorization.

99999010111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156004696602.

The product of its (nonzero) digits is 59049, while the sum is 50.

The spelling of 99999010111001 in words is "ninety-nine trillion, nine hundred ninety-nine billion, ten million, one hundred eleven thousand, one".