4321603447221 has 4 divisors (see below), whose sum is σ = 5762137929632. Its totient is φ = 2881068964812.

The previous prime is 4321603447201. The next prime is 4321603447223. The reversal of 4321603447221 is 1227443061234.

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 not a de Polignac number, because 4321603447221 - 2⁶ = 4321603447157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4321603447221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321603447223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720267241201 + ... + 720267241206.

It is an arithmetic number, because the mean of its divisors is an integer number (1440534482408).

Almost surely, 2^{4321603447221} is an apocalyptic number.

It is an amenable number.

4321603447221 is a deficient number, since it is larger than the sum of its proper divisors (1440534482411).

4321603447221 is a wasteful number, since it uses less digits than its factorization.

4321603447221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440534482410.

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 4321603447221 in words is "four trillion, three hundred twenty-one billion, six hundred three million, four hundred forty-seven thousand, two hundred twenty-one".