1105720111 has 2 divisors, whose sum is σ = 1105720112. Its totient is φ = 1105720110.

The previous prime is 1105720097. The next prime is 1105720151. The reversal of 1105720111 is 1110275011.

It is a weak prime.

It is an emirp because it is prime and its reverse (1110275011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1105720111 - 2⁷ = 1105719983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105720151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552860055 + 552860056.

It is an arithmetic number, because the mean of its divisors is an integer number (552860056).

Almost surely, 2^1105720111 is an apocalyptic number.

1105720111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105720111 is an equidigital number, since it uses as much as digits as its factorization.

1105720111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 19.

The square root of 1105720111 is about 33252.3700057605. The cubic root of 1105720111 is about 1034.0663430926.

Adding to 1105720111 its reverse (1110275011), we get a palindrome (2215995122).

The spelling of 1105720111 in words is "one billion, one hundred five million, seven hundred twenty thousand, one hundred eleven".