999913211111 has 8 divisors (see below), whose sum is σ = 1059122792880. Its totient is φ = 940747091328.

The previous prime is 999913211093. The next prime is 999913211119. The reversal of 999913211111 is 111112319999.

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 999913211111 - 2¹⁴ = 999913194727 is a prime.

It is a super-2 number, since 2×999913211111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999913211119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10818116 + ... + 10910153.

It is an arithmetic number, because the mean of its divisors is an integer number (132390349110).

Almost surely, 2^999913211111 is an apocalyptic number.

999913211111 is a deficient number, since it is larger than the sum of its proper divisors (59209581769).

999913211111 is a wasteful number, since it uses less digits than its factorization.

999913211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21730993.

The product of its digits is 39366, while the sum is 47.

The spelling of 999913211111 in words is "nine hundred ninety-nine billion, nine hundred thirteen million, two hundred eleven thousand, one hundred eleven".