21022320004401 has 16 divisors (see below), whose sum is σ = 28267226136000. Its totient is φ = 13896385122048.

The previous prime is 21022320004393. The next prime is 21022320004417. The reversal of 21022320004401 is 10440002322012.

It is not a de Polignac number, because 21022320004401 - 2³ = 21022320004393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022320004801) 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 in 15 ways as a sum of consecutive naturals, for example, 29419476 + ... + 30125573.

It is an arithmetic number, because the mean of its divisors is an integer number (1766701633500).

Almost surely, 2^{21022320004401} is an apocalyptic number.

It is an amenable number.

21022320004401 is a deficient number, since it is larger than the sum of its proper divisors (7244906131599).

21022320004401 is a wasteful number, since it uses less digits than its factorization.

21022320004401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59546048.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21022320004401 its reverse (10440002322012), we get a palindrome (31462322326413).

The spelling of 21022320004401 in words is "twenty-one trillion, twenty-two billion, three hundred twenty million, four thousand, four hundred one".