21113013301 has 2 divisors, whose sum is σ = 21113013302. Its totient is φ = 21113013300.

The previous prime is 21113013281. The next prime is 21113013349. The reversal of 21113013301 is 10331031112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20877360100 + 235653201 = 144490^2 + 15351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113013301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21113013101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556506650 + 10556506651.

It is an arithmetic number, because the mean of its divisors is an integer number (10556506651).

Almost surely, 2^21113013301 is an apocalyptic number.

It is an amenable number.

21113013301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113013301 is an equidigital number, since it uses as much as digits as its factorization.

21113013301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21113013301 its reverse (10331031112), we get a palindrome (31444044413).

The spelling of 21113013301 in words is "twenty-one billion, one hundred thirteen million, thirteen thousand, three hundred one".