21302010011 has 4 divisors (see below), whose sum is σ = 21391140000. Its totient is φ = 21212880024.

The previous prime is 21302009969. The next prime is 21302010049. The reversal of 21302010011 is 11001020312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21302010011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21302009974 and 21302010001.

It is not an unprimeable number, because it can be changed into a prime (21302010071) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 44564636 + ... + 44565113.

It is an arithmetic number, because the mean of its divisors is an integer number (5347785000).

Almost surely, 2^21302010011 is an apocalyptic number.

21302010011 is a deficient number, since it is larger than the sum of its proper divisors (89129989).

21302010011 is an equidigital number, since it uses as much as digits as its factorization.

21302010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89129988.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21302010011 its reverse (11001020312), we get a palindrome (32303030323).

The spelling of 21302010011 in words is "twenty-one billion, three hundred two million, ten thousand, eleven".