2121404302404 has 36 divisors (see below), whose sum is σ = 5362806596784. Its totient is φ = 707086247472.

The previous prime is 2121404302403. The next prime is 2121404302417. The reversal of 2121404302404 is 4042034041212.

2121404302404 is a `hidden beast` number, since 2 + 1 + 214 + 0 + 43 + 0 + 2 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (2121404302403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1487782 + ... + 2540925.

Almost surely, 2^{2121404302404} is an apocalyptic number.

It is an amenable number.

2121404302404 is an abundant number, since it is smaller than the sum of its proper divisors (3241402294380).

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

2121404302404 is a wasteful number, since it uses less digits than its factorization.

2121404302404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043344 (or 4043339 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 2121404302404 its reverse (4042034041212), we get a palindrome (6163438343616).

The spelling of 2121404302404 in words is "two trillion, one hundred twenty-one billion, four hundred four million, three hundred two thousand, four hundred four".