121201007887 has 2 divisors, whose sum is σ = 121201007888. Its totient is φ = 121201007886.

The previous prime is 121201007869. The next prime is 121201007891. The reversal of 121201007887 is 788700102121.

It is a strong prime.

It is an emirp because it is prime and its reverse (788700102121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201007887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201002887) 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, 60600503943 + 60600503944.

It is an arithmetic number, because the mean of its divisors is an integer number (60600503944).

Almost surely, 2^121201007887 is an apocalyptic number.

121201007887 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201007887 is an equidigital number, since it uses as much as digits as its factorization.

121201007887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 37.

The spelling of 121201007887 in words is "one hundred twenty-one billion, two hundred one million, seven thousand, eight hundred eighty-seven".