2121074505284 has 24 divisors (see below), whose sum is σ = 4243232239680. Its totient is φ = 908799810336.

The previous prime is 2121074505131. The next prime is 2121074505289. The reversal of 2121074505284 is 4825054701212.

It is not an unprimeable number, because it can be changed into a prime (2121074505289) 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 7 ways as a sum of consecutive naturals, for example, 9560054 + ... + 9779405.

It is an arithmetic number, because the mean of its divisors is an integer number (176801343320).

Almost surely, 2^{2121074505284} is an apocalyptic number.

It is an amenable number.

2121074505284 is an abundant number, since it is smaller than the sum of its proper divisors (2122157734396).

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

2121074505284 is a wasteful number, since it uses less digits than its factorization.

2121074505284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19343387 (or 19343385 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 41.

The spelling of 2121074505284 in words is "two trillion, one hundred twenty-one billion, seventy-four million, five hundred five thousand, two hundred eighty-four".