21113002307 has 2 divisors, whose sum is σ = 21113002308. Its totient is φ = 21113002306.

The previous prime is 21113002231. The next prime is 21113002349. The reversal of 21113002307 is 70320031112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113002307 is a prime.

It is not a weakly prime, because it can be changed into another prime (21113002607) 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 as a sum of consecutive naturals, namely, 10556501153 + 10556501154.

It is an arithmetic number, because the mean of its divisors is an integer number (10556501154).

Almost surely, 2^21113002307 is an apocalyptic number.

21113002307 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113002307 is an equidigital number, since it uses as much as digits as its factorization.

21113002307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

Adding to 21113002307 its reverse (70320031112), we get a palindrome (91433033419).

The spelling of 21113002307 in words is "twenty-one billion, one hundred thirteen million, two thousand, three hundred seven".