10021200121321 has 2 divisors, whose sum is σ = 10021200121322. Its totient is φ = 10021200121320.

The previous prime is 10021200121249. The next prime is 10021200121349. The reversal of 10021200121321 is 12312100212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6941175121321 + 3080025000000 = 2634611^2 + 1755000^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021200121321 - 2²¹ = 10021198024169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021200121295 and 10021200121304.

It is not a weakly prime, because it can be changed into another prime (10021200121391) 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 as a sum of consecutive naturals, namely, 5010600060660 + 5010600060661.

It is an arithmetic number, because the mean of its divisors is an integer number (5010600060661).

Almost surely, 2^{10021200121321} is an apocalyptic number.

It is an amenable number.

10021200121321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021200121321 is an equidigital number, since it uses as much as digits as its factorization.

10021200121321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10021200121321 its reverse (12312100212001), we get a palindrome (22333300333322).

The spelling of 10021200121321 in words is "ten trillion, twenty-one billion, two hundred million, one hundred twenty-one thousand, three hundred twenty-one".