120021119987 has 2 divisors, whose sum is σ = 120021119988. Its totient is φ = 120021119986.

The previous prime is 120021119971. The next prime is 120021120013. The reversal of 120021119987 is 789911120021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120021119987 - 2⁴ = 120021119971 is a prime.

It is not a weakly prime, because it can be changed into another prime (120021110987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010559993 + 60010559994.

It is an arithmetic number, because the mean of its divisors is an integer number (60010559994).

Almost surely, 2^120021119987 is an apocalyptic number.

120021119987 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021119987 is an equidigital number, since it uses as much as digits as its factorization.

120021119987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 41.

The spelling of 120021119987 in words is "one hundred twenty billion, twenty-one million, one hundred nineteen thousand, nine hundred eighty-seven".