21304103066 has 8 divisors (see below), whose sum is σ = 31960713024. Its totient is φ = 10650532060.

The previous prime is 21304103063. The next prime is 21304103081. The reversal of 21304103066 is 66030140312.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21304103063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742130 + ... + 770301.

It is an arithmetic number, because the mean of its divisors is an integer number (3995089128).

Almost surely, 2^21304103066 is an apocalyptic number.

21304103066 is a deficient number, since it is larger than the sum of its proper divisors (10656609958).

21304103066 is a wasteful number, since it uses less digits than its factorization.

21304103066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519476.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21304103066 its reverse (66030140312), we get a palindrome (87334243378).

The spelling of 21304103066 in words is "twenty-one billion, three hundred four million, one hundred three thousand, sixty-six".