21303032244401 has 2 divisors, whose sum is σ = 21303032244402. Its totient is φ = 21303032244400.

The previous prime is 21303032244269. The next prime is 21303032244551. The reversal of 21303032244401 is 10444223030312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13323814032400 + 7979218212001 = 3650180^2 + 2824751^2 .

It is a cyclic number.

It is not a de Polignac number, because 21303032244401 - 2³⁸ = 21028154337457 is a prime.

It is a super-3 number, since 3×21303032244401³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21303032243401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651516122200 + 10651516122201.

It is an arithmetic number, because the mean of its divisors is an integer number (10651516122201).

Almost surely, 2^{21303032244401} is an apocalyptic number.

It is an amenable number.

21303032244401 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303032244401 is an equidigital number, since it uses as much as digits as its factorization.

21303032244401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21303032244401 its reverse (10444223030312), we get a palindrome (31747255274713).

The spelling of 21303032244401 in words is "twenty-one trillion, three hundred three billion, thirty-two million, two hundred forty-four thousand, four hundred one".