21443124314401 has 4 divisors (see below), whose sum is σ = 21443152055472. Its totient is φ = 21443096573332.

The previous prime is 21443124314399. The next prime is 21443124314459. The reversal of 21443124314401 is 10441342134412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21443124314401 - 2¹ = 21443124314399 is a prime.

It is a super-3 number, since 3×21443124314401³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21443124314471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12676831 + ... + 14268436.

It is an arithmetic number, because the mean of its divisors is an integer number (5360788013868).

Almost surely, 2^{21443124314401} is an apocalyptic number.

It is an amenable number.

21443124314401 is a deficient number, since it is larger than the sum of its proper divisors (27741071).

21443124314401 is an equidigital number, since it uses as much as digits as its factorization.

21443124314401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27741070.

The product of its (nonzero) digits is 36864, while the sum is 34.

Adding to 21443124314401 its reverse (10441342134412), we get a palindrome (31884466448813).

The spelling of 21443124314401 in words is "twenty-one trillion, four hundred forty-three billion, one hundred twenty-four million, three hundred fourteen thousand, four hundred one".