121303396447 has 2 divisors, whose sum is σ = 121303396448. Its totient is φ = 121303396446.

The previous prime is 121303396433. The next prime is 121303396451. The reversal of 121303396447 is 744693303121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121303396447 - 2¹⁵ = 121303363679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121303396477) 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, 60651698223 + 60651698224.

It is an arithmetic number, because the mean of its divisors is an integer number (60651698224).

Almost surely, 2^121303396447 is an apocalyptic number.

121303396447 is a deficient number, since it is larger than the sum of its proper divisors (1).

121303396447 is an equidigital number, since it uses as much as digits as its factorization.

121303396447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 43.

Adding to 121303396447 its reverse (744693303121), we get a palindrome (865996699568).

The spelling of 121303396447 in words is "one hundred twenty-one billion, three hundred three million, three hundred ninety-six thousand, four hundred forty-seven".