21102330001 has 2 divisors, whose sum is σ = 21102330002. Its totient is φ = 21102330000.

The previous prime is 21102329999. The next prime is 21102330017. The reversal of 21102330001 is 10003320112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14250629376 + 6851700625 = 119376^2 + 82775^2 .

It is a cyclic number.

It is not a de Polignac number, because 21102330001 - 2¹ = 21102329999 is a prime.

It is a super-2 number, since 2×21102330001² (a number of 21 digits) contains 22 as substring.

Together with 21102329999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21102330091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551165000 + 10551165001.

It is an arithmetic number, because the mean of its divisors is an integer number (10551165001).

Almost surely, 2^21102330001 is an apocalyptic number.

It is an amenable number.

21102330001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102330001 is an equidigital number, since it uses as much as digits as its factorization.

21102330001 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 13.

Adding to 21102330001 its reverse (10003320112), we get a palindrome (31105650113).

The spelling of 21102330001 in words is "twenty-one billion, one hundred two million, three hundred thirty thousand, one".