265120111 has 2 divisors, whose sum is σ = 265120112. Its totient is φ = 265120110.

The previous prime is 265120087. The next prime is 265120127. The reversal of 265120111 is 111021562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265120111 - 2⁹ = 265119599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265120181) 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, 132560055 + 132560056.

It is an arithmetic number, because the mean of its divisors is an integer number (132560056).

Almost surely, 2^265120111 is an apocalyptic number.

265120111 is a deficient number, since it is larger than the sum of its proper divisors (1).

265120111 is an equidigital number, since it uses as much as digits as its factorization.

265120111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 265120111 is about 16282.5093582040. The cubic root of 265120111 is about 642.4128572129.

Adding to 265120111 its reverse (111021562), we get a palindrome (376141673).

The spelling of 265120111 in words is "two hundred sixty-five million, one hundred twenty thousand, one hundred eleven".