2121112000987 has 4 divisors (see below), whose sum is σ = 2424128001136. Its totient is φ = 1818096000840.

The previous prime is 2121112000981. The next prime is 2121112000993. The reversal of 2121112000987 is 7890002111212.

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

It is an interprime number because it is at equal distance from previous prime (2121112000981) and next prime (2121112000993).

It is not a de Polignac number, because 2121112000987 - 2³⁵ = 2086752262619 is a prime.

It is a super-2 number, since 2×2121112000987² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121112000981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151508000064 + ... + 151508000077.

It is an arithmetic number, because the mean of its divisors is an integer number (606032000284).

Almost surely, 2^{2121112000987} is an apocalyptic number.

2121112000987 is a deficient number, since it is larger than the sum of its proper divisors (303016000149).

2121112000987 is an equidigital number, since it uses as much as digits as its factorization.

2121112000987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303016000148.

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

The spelling of 2121112000987 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, nine hundred eighty-seven", and thus it is an aban number.