21334210303204 has 24 divisors (see below), whose sum is σ = 37422867396600. Its totient is φ = 10641968633856.

The previous prime is 21334210303151. The next prime is 21334210303229. The reversal of 21334210303204 is 40230301243312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1952732349604 + 19381477953600 = 1397402^2 + 4402440^2 .

It is a super-2 number, since 2×21334210303204² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13165894 + ... + 14697250.

It is an arithmetic number, because the mean of its divisors is an integer number (1559286141525).

Almost surely, 2^{21334210303204} is an apocalyptic number.

It is an amenable number.

21334210303204 is a deficient number, since it is larger than the sum of its proper divisors (16088657093396).

21334210303204 is a wasteful number, since it uses less digits than its factorization.

21334210303204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539567 (or 1539565 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21334210303204 its reverse (40230301243312), we get a palindrome (61564511546516).

The spelling of 21334210303204 in words is "twenty-one trillion, three hundred thirty-four billion, two hundred ten million, three hundred three thousand, two hundred four".