21404310312204 has 36 divisors (see below), whose sum is σ = 54112315695984. Its totient is φ = 7133850226272.

The previous prime is 21404310312197. The next prime is 21404310312221. The reversal of 21404310312204 is 40221301340412.

21404310312204 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 431 + 0 + 3 + 1 + 220 + 4 = 666.

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

It is a super-2 number, since 2×21404310312204² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38045112 + ... + 38603615.

It is an arithmetic number, because the mean of its divisors is an integer number (1503119880444).

Almost surely, 2^{21404310312204} is an apocalyptic number.

It is an amenable number.

21404310312204 is an abundant number, since it is smaller than the sum of its proper divisors (32708005383780).

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

21404310312204 is a wasteful number, since it uses less digits than its factorization.

21404310312204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76656494 (or 76656489 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21404310312204 its reverse (40221301340412), we get a palindrome (61625611652616).

The spelling of 21404310312204 in words is "twenty-one trillion, four hundred four billion, three hundred ten million, three hundred twelve thousand, two hundred four".