221454224401 has 4 divisors (see below), whose sum is σ = 223047420400. Its totient is φ = 219861028404.

The previous prime is 221454224333. The next prime is 221454224419. The reversal of 221454224401 is 104422454122.

221454224401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221454224401 - 2²¹ = 221452127249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221454224471) 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, 796597791 + ... + 796598068.

It is an arithmetic number, because the mean of its divisors is an integer number (55761855100).

Almost surely, 2^221454224401 is an apocalyptic number.

It is an amenable number.

221454224401 is a deficient number, since it is larger than the sum of its proper divisors (1593195999).

221454224401 is a wasteful number, since it uses less digits than its factorization.

221454224401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593195998.

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 221454224401 its reverse (104422454122), we get a palindrome (325876678523).

The spelling of 221454224401 in words is "two hundred twenty-one billion, four hundred fifty-four million, two hundred twenty-four thousand, four hundred one".