221403221332 has 24 divisors (see below), whose sum is σ = 396571656096. Its totient is φ = 108098403168.

The previous prime is 221403221323. The next prime is 221403221341. The reversal of 221403221332 is 233122304122.

It is an interprime number because it is at equal distance from previous prime (221403221323) and next prime (221403221341).

It is a junction number, because it is equal to n+sod(n) for n = 221403221297 and 221403221306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484878 + ... + 823354.

It is an arithmetic number, because the mean of its divisors is an integer number (16523819004).

Almost surely, 2^221403221332 is an apocalyptic number.

It is an amenable number.

221403221332 is a deficient number, since it is larger than the sum of its proper divisors (175168434764).

221403221332 is a wasteful number, since it uses less digits than its factorization.

221403221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342327 (or 342325 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 221403221332 its reverse (233122304122), we get a palindrome (454525525454).

The spelling of 221403221332 in words is "two hundred twenty-one billion, four hundred three million, two hundred twenty-one thousand, three hundred thirty-two".