121861864483 has 2 divisors, whose sum is σ = 121861864484. Its totient is φ = 121861864482.

The previous prime is 121861864393. The next prime is 121861864489. The reversal of 121861864483 is 384468168121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121861864483 - 2⁹ = 121861863971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121861864483.

It is not a weakly prime, because it can be changed into another prime (121861864489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60930932241 + 60930932242.

It is an arithmetic number, because the mean of its divisors is an integer number (60930932242).

Almost surely, 2^121861864483 is an apocalyptic number.

121861864483 is a deficient number, since it is larger than the sum of its proper divisors (1).

121861864483 is an equidigital number, since it uses as much as digits as its factorization.

121861864483 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1769472, while the sum is 52.

The spelling of 121861864483 in words is "one hundred twenty-one billion, eight hundred sixty-one million, eight hundred sixty-four thousand, four hundred eighty-three".