2012021021987 has 8 divisors (see below), whose sum is σ = 2099523797280. Its totient is φ = 1924520213440.

The previous prime is 2012021021977. The next prime is 2012021021993. The reversal of 2012021021987 is 7891201202102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2012021021987 - 2¹⁰ = 2012021020963 is a prime.

It is a super-2 number, since 2×2012021021987² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2012021021957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1832687 + ... + 2717127.

It is an arithmetic number, because the mean of its divisors is an integer number (262440474660).

Almost surely, 2^{2012021021987} is an apocalyptic number.

2012021021987 is a deficient number, since it is larger than the sum of its proper divisors (87502775293).

2012021021987 is an equidigital number, since it uses as much as digits as its factorization.

2012021021987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983373.

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 2012021021987 in words is "two trillion, twelve billion, twenty-one million, twenty-one thousand, nine hundred eighty-seven".