21301101023 has 2 divisors, whose sum is σ = 21301101024. Its totient is φ = 21301101022.

The previous prime is 21301101013. The next prime is 21301101037. The reversal of 21301101023 is 32010110312.

It is an a-pointer prime, because the next prime (21301101037) can be obtained adding 21301101023 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21301101023 - 2⁸ = 21301100767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21301100989 and 21301101007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21301101013) 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, 10650550511 + 10650550512.

It is an arithmetic number, because the mean of its divisors is an integer number (10650550512).

Almost surely, 2^21301101023 is an apocalyptic number.

21301101023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301101023 is an equidigital number, since it uses as much as digits as its factorization.

21301101023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21301101023 its reverse (32010110312), we get a palindrome (53311211335).

The spelling of 21301101023 in words is "twenty-one billion, three hundred one million, one hundred one thousand, twenty-three".