221301302232 has 32 divisors (see below), whose sum is σ = 553433126400. Its totient is φ = 73743117984.

The previous prime is 221301302191. The next prime is 221301302239. The reversal of 221301302232 is 232203103122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221301302199 and 221301302208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221301302239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423488 + ... + 1571279.

It is an arithmetic number, because the mean of its divisors is an integer number (17294785200).

Almost surely, 2^221301302232 is an apocalyptic number.

It is an amenable number.

221301302232 is an abundant number, since it is smaller than the sum of its proper divisors (332131824168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221301302232 is a wasteful number, since it uses less digits than its factorization.

221301302232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997855 (or 2997851 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221301302232 its reverse (232203103122), we get a palindrome (453504405354).

The spelling of 221301302232 in words is "two hundred twenty-one billion, three hundred one million, three hundred two thousand, two hundred thirty-two".