121441402987 has 2 divisors, whose sum is σ = 121441402988. Its totient is φ = 121441402986.

The previous prime is 121441402969. The next prime is 121441403009. The reversal of 121441402987 is 789204144121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121441402987 is a prime.

It is not a weakly prime, because it can be changed into another prime (121441402967) 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 as a sum of consecutive naturals, namely, 60720701493 + 60720701494.

It is an arithmetic number, because the mean of its divisors is an integer number (60720701494).

Almost surely, 2^121441402987 is an apocalyptic number.

121441402987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121441402987 is an equidigital number, since it uses as much as digits as its factorization.

121441402987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 121441402987 in words is "one hundred twenty-one billion, four hundred forty-one million, four hundred two thousand, nine hundred eighty-seven".