10101321223421 has 2 divisors, whose sum is σ = 10101321223422. Its totient is φ = 10101321223420.

The previous prime is 10101321223391. The next prime is 10101321223423. The reversal of 10101321223421 is 12432212310101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7386768415321 + 2714552808100 = 2717861^2 + 1647590^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101321223421 - 2¹⁴ = 10101321207037 is a prime.

Together with 10101321223423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101321223423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050660611710 + 5050660611711.

It is an arithmetic number, because the mean of its divisors is an integer number (5050660611711).

Almost surely, 2^{10101321223421} is an apocalyptic number.

It is an amenable number.

10101321223421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101321223421 is an equidigital number, since it uses as much as digits as its factorization.

10101321223421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 10101321223421 its reverse (12432212310101), we get a palindrome (22533533533522).

The spelling of 10101321223421 in words is "ten trillion, one hundred one billion, three hundred twenty-one million, two hundred twenty-three thousand, four hundred twenty-one".