111111011100949 has 2 divisors, whose sum is σ = 111111011100950. Its totient is φ = 111111011100948.

The previous prime is 111111011100889. The next prime is 111111011101033. The reversal of 111111011100949 is 949001110111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99155888867025 + 11955122233924 = 9957705^2 + 3457618^2 .

It is an emirp because it is prime and its reverse (949001110111111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111111011100949 - 2⁷ = 111111011100821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111111011100949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111018100949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555505550474 + 55555505550475.

It is an arithmetic number, because the mean of its divisors is an integer number (55555505550475).

Almost surely, 2^{111111011100949} is an apocalyptic number.

It is an amenable number.

111111011100949 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111011100949 is an equidigital number, since it uses as much as digits as its factorization.

111111011100949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 31.

The spelling of 111111011100949 in words is "one hundred eleven trillion, one hundred eleven billion, eleven million, one hundred thousand, nine hundred forty-nine".