105111247 has 2 divisors, whose sum is σ = 105111248. Its totient is φ = 105111246.

The previous prime is 105111241. The next prime is 105111263. The reversal of 105111247 is 742111501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105111247 - 2³ = 105111239 is a prime.

It is a super-2 number, since 2×105111247² = 22096748491790018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105111241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52555623 + 52555624.

It is an arithmetic number, because the mean of its divisors is an integer number (52555624).

Almost surely, 2^105111247 is an apocalyptic number.

105111247 is a deficient number, since it is larger than the sum of its proper divisors (1).

105111247 is an equidigital number, since it uses as much as digits as its factorization.

105111247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 105111247 is about 10252.3776266776. The cubic root of 105111247 is about 471.9359517015.

Adding to 105111247 its reverse (742111501), we get a palindrome (847222748).

The spelling of 105111247 in words is "one hundred five million, one hundred eleven thousand, two hundred forty-seven".