21303110109 has 8 divisors (see below), whose sum is σ = 28669606560. Its totient is φ = 14069343536.

The previous prime is 21303110051. The next prime is 21303110113. The reversal of 21303110109 is 90101130312.

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

It is a cyclic number.

It is not a de Polignac number, because 21303110109 - 2¹¹ = 21303108061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303110149) 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, 33182094 + ... + 33182735.

It is an arithmetic number, because the mean of its divisors is an integer number (3583700820).

Almost surely, 2^21303110109 is an apocalyptic number.

It is an amenable number.

21303110109 is a deficient number, since it is larger than the sum of its proper divisors (7366496451).

21303110109 is a wasteful number, since it uses less digits than its factorization.

21303110109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66364939.

The product of its (nonzero) digits is 162, while the sum is 21.

The spelling of 21303110109 in words is "twenty-one billion, three hundred three million, one hundred ten thousand, one hundred nine".