120212011987 has 4 divisors (see below), whose sum is σ = 120271613416. Its totient is φ = 120152410560.

The previous prime is 120212011973. The next prime is 120212012029. The reversal of 120212011987 is 789110212021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789110212021 = 619 ⋅1274814559.

It is a cyclic number.

It is not a de Polignac number, because 120212011987 - 2³¹ = 118064528339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120212014987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29797689 + ... + 29801722.

It is an arithmetic number, because the mean of its divisors is an integer number (30067903354).

Almost surely, 2^120212011987 is an apocalyptic number.

120212011987 is a deficient number, since it is larger than the sum of its proper divisors (59601429).

120212011987 is an equidigital number, since it uses as much as digits as its factorization.

120212011987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59601428.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 120212011987 in words is "one hundred twenty billion, two hundred twelve million, eleven thousand, nine hundred eighty-seven".