111355266109 has 2 divisors, whose sum is σ = 111355266110. Its totient is φ = 111355266108.

The previous prime is 111355266103. The next prime is 111355266137. The reversal of 111355266109 is 901662553111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94811647225 + 16543618884 = 307915^2 + 128622^2 .

It is a cyclic number.

It is not a de Polignac number, because 111355266109 - 2¹³ = 111355257917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111355266103) 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, 55677633054 + 55677633055.

It is an arithmetic number, because the mean of its divisors is an integer number (55677633055).

Almost surely, 2^111355266109 is an apocalyptic number.

It is an amenable number.

111355266109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111355266109 is an equidigital number, since it uses as much as digits as its factorization.

111355266109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 40.

The spelling of 111355266109 in words is "one hundred eleven billion, three hundred fifty-five million, two hundred sixty-six thousand, one hundred nine".