120012110021987 has 16 divisors (see below), whose sum is σ = 120724017552768. Its totient is φ = 119301163752960.

The previous prime is 120012110021873. The next prime is 120012110022001. The reversal of 120012110021987 is 789120011210021.

It is a cyclic number.

It is not a de Polignac number, because 120012110021987 - 2¹⁶ = 120012109956451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120012110023987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518274688 + ... + 1518353730.

It is an arithmetic number, because the mean of its divisors is an integer number (7545251097048).

Almost surely, 2^{120012110021987} is an apocalyptic number.

120012110021987 is a deficient number, since it is larger than the sum of its proper divisors (711907530781).

120012110021987 is a wasteful number, since it uses less digits than its factorization.

120012110021987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85010.

The product of its (nonzero) digits is 4032, while the sum is 35.

The spelling of 120012110021987 in words is "one hundred twenty trillion, twelve billion, one hundred ten million, twenty-one thousand, nine hundred eighty-seven".