1241512521191 has 2 divisors, whose sum is σ = 1241512521192. Its totient is φ = 1241512521190.

The previous prime is 1241512521133. The next prime is 1241512521257. The reversal of 1241512521191 is 1911252151421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1241512521191 - 2³⁴ = 1224332652007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241512521091) 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, 620756260595 + 620756260596.

It is an arithmetic number, because the mean of its divisors is an integer number (620756260596).

Almost surely, 2^{1241512521191} is an apocalyptic number.

1241512521191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241512521191 is an equidigital number, since it uses as much as digits as its factorization.

1241512521191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 35.

The spelling of 1241512521191 in words is "one trillion, two hundred forty-one billion, five hundred twelve million, five hundred twenty-one thousand, one hundred ninety-one".