12021012019987 has 2 divisors, whose sum is σ = 12021012019988. Its totient is φ = 12021012019986.

The previous prime is 12021012019871. The next prime is 12021012019999. The reversal of 12021012019987 is 78991021012021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78991021012021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021012019987 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021012019487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010506009993 + 6010506009994.

It is an arithmetic number, because the mean of its divisors is an integer number (6010506009994).

Almost surely, 2^{12021012019987} is an apocalyptic number.

12021012019987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021012019987 is an equidigital number, since it uses as much as digits as its factorization.

12021012019987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 12021012019987 in words is "twelve trillion, twenty-one billion, twelve million, nineteen thousand, nine hundred eighty-seven".