12012021100987 has 4 divisors (see below), whose sum is σ = 12012631270576. Its totient is φ = 12011410931400.

The previous prime is 12012021100903. The next prime is 12012021100999. The reversal of 12012021100987 is 78900112021021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12012021100987 - 2¹¹ = 12012021098939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012021103987) 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, 305055264 + ... + 305094637.

It is an arithmetic number, because the mean of its divisors is an integer number (3003157817644).

Almost surely, 2^{12012021100987} is an apocalyptic number.

12012021100987 is a deficient number, since it is larger than the sum of its proper divisors (610169589).

12012021100987 is an equidigital number, since it uses as much as digits as its factorization.

12012021100987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610169588.

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

The spelling of 12012021100987 in words is "twelve trillion, twelve billion, twenty-one million, one hundred thousand, nine hundred eighty-seven".