21102012301 has 2 divisors, whose sum is σ = 21102012302. Its totient is φ = 21102012300.

The previous prime is 21102012299. The next prime is 21102012341. The reversal of 21102012301 is 10321020112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12793872100 + 8308140201 = 113110^2 + 91149^2 .

It is a cyclic number.

It is not a de Polignac number, because 21102012301 - 2¹ = 21102012299 is a prime.

Together with 21102012299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21102012341) 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, 10551006150 + 10551006151.

It is an arithmetic number, because the mean of its divisors is an integer number (10551006151).

Almost surely, 2^21102012301 is an apocalyptic number.

It is an amenable number.

21102012301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102012301 is an equidigital number, since it uses as much as digits as its factorization.

21102012301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21102012301 its reverse (10321020112), we get a palindrome (31423032413).

The spelling of 21102012301 in words is "twenty-one billion, one hundred two million, twelve thousand, three hundred one".