21204302102331 has 8 divisors (see below), whose sum is σ = 28272430038864. Its totient is φ = 14136187783680.

The previous prime is 21204302102329. The next prime is 21204302102339. The reversal of 21204302102331 is 13320120340212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21204302102331 - 2¹ = 21204302102329 is a prime.

It is a super-2 number, since 2×21204302102331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21204302102339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068171 + ... + 6599211.

It is an arithmetic number, because the mean of its divisors is an integer number (3534053754858).

Almost surely, 2^{21204302102331} is an apocalyptic number.

21204302102331 is a deficient number, since it is larger than the sum of its proper divisors (7068127936533).

21204302102331 is a wasteful number, since it uses less digits than its factorization.

21204302102331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6808941.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21204302102331 its reverse (13320120340212), we get a palindrome (34524422442543).

The spelling of 21204302102331 in words is "twenty-one trillion, two hundred four billion, three hundred two million, one hundred two thousand, three hundred thirty-one".