10321404421 has 2 divisors, whose sum is σ = 10321404422. Its totient is φ = 10321404420.

The previous prime is 10321404419. The next prime is 10321404451. The reversal of 10321404421 is 12440412301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7161390625 + 3160013796 = 84625^2 + 56214^2 .

It is an emirp because it is prime and its reverse (12440412301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10321404421 - 2¹ = 10321404419 is a prime.

Together with 10321404419, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10321404392 and 10321404401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10321404451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160702210 + 5160702211.

It is an arithmetic number, because the mean of its divisors is an integer number (5160702211).

Almost surely, 2^10321404421 is an apocalyptic number.

It is an amenable number.

10321404421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321404421 is an equidigital number, since it uses as much as digits as its factorization.

10321404421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 10321404421 its reverse (12440412301), we get a palindrome (22761816722).

The spelling of 10321404421 in words is "ten billion, three hundred twenty-one million, four hundred four thousand, four hundred twenty-one".