21303220300111 has 4 divisors (see below), whose sum is σ = 21339511987752. Its totient is φ = 21266928612472.

The previous prime is 21303220300073. The next prime is 21303220300151. The reversal of 21303220300111 is 11100302230312.

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

It is a cyclic number.

It is not a de Polignac number, because 21303220300111 - 2⁴³ = 12507127277903 is a prime.

It is a super-2 number, since 2×21303220300111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303220300151) 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, 18145842940 + ... + 18145844113.

It is an arithmetic number, because the mean of its divisors is an integer number (5334877996938).

Almost surely, 2^{21303220300111} is an apocalyptic number.

21303220300111 is a deficient number, since it is larger than the sum of its proper divisors (36291687641).

21303220300111 is an equidigital number, since it uses as much as digits as its factorization.

21303220300111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36291687640.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21303220300111 its reverse (11100302230312), we get a palindrome (32403522530423).

The spelling of 21303220300111 in words is "twenty-one trillion, three hundred three billion, two hundred twenty million, three hundred thousand, one hundred eleven".