21110301307 has 2 divisors, whose sum is σ = 21110301308. Its totient is φ = 21110301306.

The previous prime is 21110301193. The next prime is 21110301379. The reversal of 21110301307 is 70310301112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21110301307 is a prime.

It is not a weakly prime, because it can be changed into another prime (21110301397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555150653 + 10555150654.

It is an arithmetic number, because the mean of its divisors is an integer number (10555150654).

Almost surely, 2^21110301307 is an apocalyptic number.

21110301307 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110301307 is an equidigital number, since it uses as much as digits as its factorization.

21110301307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 19.

Adding to 21110301307 its reverse (70310301112), we get a palindrome (91420602419).

The spelling of 21110301307 in words is "twenty-one billion, one hundred ten million, three hundred one thousand, three hundred seven".