221201323233 has 32 divisors (see below), whose sum is σ = 338718105600. Its totient is φ = 126991800000.

The previous prime is 221201323219. The next prime is 221201323283. The reversal of 221201323233 is 332323102122.

It is a de Polignac number, because none of the positive numbers 2^k-221201323233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221201323283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9819483 + ... + 9841983.

It is an arithmetic number, because the mean of its divisors is an integer number (10584940800).

Almost surely, 2^221201323233 is an apocalyptic number.

It is an amenable number.

221201323233 is a deficient number, since it is larger than the sum of its proper divisors (117516782367).

221201323233 is a wasteful number, since it uses less digits than its factorization.

221201323233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38213.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 221201323233 its reverse (332323102122), we get a palindrome (553524425355).

The spelling of 221201323233 in words is "two hundred twenty-one billion, two hundred one million, three hundred twenty-three thousand, two hundred thirty-three".