121000111110247 has 2 divisors, whose sum is σ = 121000111110248. Its totient is φ = 121000111110246.

The previous prime is 121000111110169. The next prime is 121000111110251. The reversal of 121000111110247 is 742011111000121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121000111110247 - 2¹¹ = 121000111108199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000111110547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500055555123 + 60500055555124.

It is an arithmetic number, because the mean of its divisors is an integer number (60500055555124).

Almost surely, 2^{121000111110247} is an apocalyptic number.

121000111110247 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000111110247 is an equidigital number, since it uses as much as digits as its factorization.

121000111110247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 121000111110247 its reverse (742011111000121), we get a palindrome (863011222110368).

The spelling of 121000111110247 in words is "one hundred twenty-one trillion, one hundred eleven million, one hundred ten thousand, two hundred forty-seven".