221201323232 has 12 divisors (see below), whose sum is σ = 435490105176. Its totient is φ = 110600661600.

The previous prime is 221201323219. The next prime is 221201323283. The reversal of 221201323232 is 232323102122.

It is a junction number, because it is equal to n+sod(n) for n = 221201323198 and 221201323207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3456270644 + ... + 3456270707.

It is an arithmetic number, because the mean of its divisors is an integer number (36290842098).

Almost surely, 2^221201323232 is an apocalyptic number.

It is an amenable number.

221201323232 is a deficient number, since it is larger than the sum of its proper divisors (214288781944).

221201323232 is an equidigital number, since it uses as much as digits as its factorization.

221201323232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912541361 (or 6912541353 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 221201323232 its reverse (232323102122), we get a palindrome (453524425354).

The spelling of 221201323232 in words is "two hundred twenty-one billion, two hundred one million, three hundred twenty-three thousand, two hundred thirty-two".