21301311314111 has 4 divisors (see below), whose sum is σ = 21301350786552. Its totient is φ = 21301271841672.

The previous prime is 21301311314099. The next prime is 21301311314159. The reversal of 21301311314111 is 11141311310312.

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-21301311314111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301311314191) 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, 18915365 + ... + 20009838.

It is an arithmetic number, because the mean of its divisors is an integer number (5325337696638).

Almost surely, 2^{21301311314111} is an apocalyptic number.

21301311314111 is a deficient number, since it is larger than the sum of its proper divisors (39472441).

21301311314111 is an equidigital number, since it uses as much as digits as its factorization.

21301311314111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39472440.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 21301311314111 its reverse (11141311310312), we get a palindrome (32442622624423).

The spelling of 21301311314111 in words is "twenty-one trillion, three hundred one billion, three hundred eleven million, three hundred fourteen thousand, one hundred eleven".