2121000984 has 64 divisors (see below), whose sum is σ = 5972421600. Its totient is φ = 697310208.

The previous prime is 2121000967. The next prime is 2121000991. The reversal of 2121000984 is 4890001212.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51489 + ... + 83024.

Almost surely, 2^2121000984 is an apocalyptic number.

2121000984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2121000984 is an abundant number, since it is smaller than the sum of its proper divisors (3851420616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121000984 is a wasteful number, since it uses less digits than its factorization.

2121000984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134601 (or 134591 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 2121000984 is about 46054.3264417145. The cubic root of 2121000984 is about 1284.8338107635.

The spelling of 2121000984 in words is "two billion, one hundred twenty-one million, nine hundred eighty-four", and thus it is an aban number.