121963104647 has 4 divisors (see below), whose sum is σ = 122162066280. Its totient is φ = 121764143016.

The previous prime is 121963104619. The next prime is 121963104661. The reversal of 121963104647 is 746401369121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746401369121 = 199499 ⋅3741379.

It is a cyclic number.

It is not a de Polignac number, because 121963104647 - 2⁸ = 121963104391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121963104598 and 121963104607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121963104667) 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 in 3 ways as a sum of consecutive naturals, for example, 99479897 + ... + 99481122.

It is an arithmetic number, because the mean of its divisors is an integer number (30540516570).

Almost surely, 2^121963104647 is an apocalyptic number.

121963104647 is a deficient number, since it is larger than the sum of its proper divisors (198961633).

121963104647 is an equidigital number, since it uses as much as digits as its factorization.

121963104647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198961632.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 121963104647 in words is "one hundred twenty-one billion, nine hundred sixty-three million, one hundred four thousand, six hundred forty-seven".