990001010111 has 2 divisors, whose sum is σ = 990001010112. Its totient is φ = 990001010110.

The previous prime is 990001010101. The next prime is 990001010171. The reversal of 990001010111 is 111010100099.

It is a happy number.

990001010111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (111010100099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990001010111 - 2¹⁰ = 990001009087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990001010101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495000505055 + 495000505056.

It is an arithmetic number, because the mean of its divisors is an integer number (495000505056).

Almost surely, 2^990001010111 is an apocalyptic number.

990001010111 is a deficient number, since it is larger than the sum of its proper divisors (1).

990001010111 is an equidigital number, since it uses as much as digits as its factorization.

990001010111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 990001010111 in words is "nine hundred ninety billion, one million, ten thousand, one hundred eleven".