999112211101 has 2 divisors, whose sum is σ = 999112211102. Its totient is φ = 999112211100.

The previous prime is 999112211087. The next prime is 999112211147. The reversal of 999112211101 is 101112211999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 981853083225 + 17259127876 = 990885^2 + 131374^2 .

It is an emirp because it is prime and its reverse (101112211999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999112211101 - 2⁹ = 999112210589 is a prime.

It is a super-2 number, since 2×999112211101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999112218101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499556105550 + 499556105551.

It is an arithmetic number, because the mean of its divisors is an integer number (499556105551).

Almost surely, 2^999112211101 is an apocalyptic number.

It is an amenable number.

999112211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

999112211101 is an equidigital number, since it uses as much as digits as its factorization.

999112211101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 37.

The spelling of 999112211101 in words is "nine hundred ninety-nine billion, one hundred twelve million, two hundred eleven thousand, one hundred one".