10212110101321 has 2 divisors, whose sum is σ = 10212110101322. Its totient is φ = 10212110101320.

The previous prime is 10212110101313. The next prime is 10212110101337. The reversal of 10212110101321 is 12310101121201.

It is a happy number.

It is an a-pointer prime, because the next prime (10212110101337) can be obtained adding 10212110101321 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9293742462096 + 918367639225 = 3048564^2 + 958315^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212110101321 - 2³ = 10212110101313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212110101295 and 10212110101304.

It is not a weakly prime, because it can be changed into another prime (10212110101421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106055050660 + 5106055050661.

It is an arithmetic number, because the mean of its divisors is an integer number (5106055050661).

Almost surely, 2^{10212110101321} is an apocalyptic number.

It is an amenable number.

10212110101321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212110101321 is an equidigital number, since it uses as much as digits as its factorization.

10212110101321 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 16.

Adding to 10212110101321 its reverse (12310101121201), we get a palindrome (22522211222522).

The spelling of 10212110101321 in words is "ten trillion, two hundred twelve billion, one hundred ten million, one hundred one thousand, three hundred twenty-one".