120100009987 has 2 divisors, whose sum is σ = 120100009988. Its totient is φ = 120100009986.

The previous prime is 120100009979. The next prime is 120100010047. The reversal of 120100009987 is 789900001021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120100009987 - 2³ = 120100009979 is a prime.

It is not a weakly prime, because it can be changed into another prime (120100009087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60050004993 + 60050004994.

It is an arithmetic number, because the mean of its divisors is an integer number (60050004994).

Almost surely, 2^120100009987 is an apocalyptic number.

120100009987 is a deficient number, since it is larger than the sum of its proper divisors (1).

120100009987 is an equidigital number, since it uses as much as digits as its factorization.

120100009987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 120100009987 in words is "one hundred twenty billion, one hundred million, nine thousand, nine hundred eighty-seven".