2121010109984 has 24 divisors (see below), whose sum is σ = 4175773566300. Its totient is φ = 1060496188416.

The previous prime is 2121010109983. The next prime is 2121010109989. The reversal of 2121010109984 is 4899010101212.

It can be written as a sum of positive squares in 2 ways, for example, as 2105923392400 + 15086717584 = 1451180^2 + 122828^2 .

It is not an unprimeable number, because it can be changed into a prime (2121010109983) 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, 5399012 + ... + 5778524.

Almost surely, 2^{2121010109984} is an apocalyptic number.

It is an amenable number.

2121010109984 is a deficient number, since it is larger than the sum of its proper divisors (2054763456316).

2121010109984 is a wasteful number, since it uses less digits than its factorization.

2121010109984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554172 (or 554164 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 2121010109984 in words is "two trillion, one hundred twenty-one billion, ten million, one hundred nine thousand, nine hundred eighty-four".