21310230122101 has 16 divisors (see below), whose sum is σ = 21456724204080. Its totient is φ = 21164016025600.

The previous prime is 21310230122039. The next prime is 21310230122141. The reversal of 21310230122101 is 10122103201312.

It can be written as a sum of positive squares in 8 ways, for example, as 10369681599601 + 10940548522500 = 3220199^2 + 3307650^2 .

It is a cyclic number.

It is not a de Polignac number, because 21310230122101 - 2¹⁵ = 21310230089333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310230122141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694377765 + ... + 694408453.

It is an arithmetic number, because the mean of its divisors is an integer number (1341045262755).

Almost surely, 2^{21310230122101} is an apocalyptic number.

It is an amenable number.

21310230122101 is a deficient number, since it is larger than the sum of its proper divisors (146494081979).

21310230122101 is a wasteful number, since it uses less digits than its factorization.

21310230122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35096.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21310230122101 its reverse (10122103201312), we get a palindrome (31432333323413).

The spelling of 21310230122101 in words is "twenty-one trillion, three hundred ten billion, two hundred thirty million, one hundred twenty-two thousand, one hundred one".