121344443447 has 2 divisors, whose sum is σ = 121344443448. Its totient is φ = 121344443446.

The previous prime is 121344443393. The next prime is 121344443459. The reversal of 121344443447 is 744344443121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121344443447 - 2³⁴ = 104164574263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121344443477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60672221723 + 60672221724.

It is an arithmetic number, because the mean of its divisors is an integer number (60672221724).

Almost surely, 2^121344443447 is an apocalyptic number.

121344443447 is a deficient number, since it is larger than the sum of its proper divisors (1).

121344443447 is an equidigital number, since it uses as much as digits as its factorization.

121344443447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 41.

Adding to 121344443447 its reverse (744344443121), we get a palindrome (865688886568).

The spelling of 121344443447 in words is "one hundred twenty-one billion, three hundred forty-four million, four hundred forty-three thousand, four hundred forty-seven".