10421442324121 has 2 divisors, whose sum is σ = 10421442324122. Its totient is φ = 10421442324120.

The previous prime is 10421442324119. The next prime is 10421442324149. The reversal of 10421442324121 is 12142324412401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8657688336025 + 1763753988096 = 2942395^2 + 1328064^2 .

It is a cyclic number.

It is not a de Polignac number, because 10421442324121 - 2¹ = 10421442324119 is a prime.

It is a super-2 number, since 2×10421442324121² (a number of 27 digits) contains 22 as substring.

Together with 10421442324119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10421412324121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210721162060 + 5210721162061.

It is an arithmetic number, because the mean of its divisors is an integer number (5210721162061).

Almost surely, 2^{10421442324121} is an apocalyptic number.

It is an amenable number.

10421442324121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421442324121 is an equidigital number, since it uses as much as digits as its factorization.

10421442324121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 10421442324121 its reverse (12142324412401), we get a palindrome (22563766736522).

The spelling of 10421442324121 in words is "ten trillion, four hundred twenty-one billion, four hundred forty-two million, three hundred twenty-four thousand, one hundred twenty-one".