221331302332 has 12 divisors (see below), whose sum is σ = 442662604720. Its totient is φ = 94856272416.

The previous prime is 221331302329. The next prime is 221331302389. The reversal of 221331302332 is 233203133122.

221331302332 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221331302297 and 221331302306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3952344657 + ... + 3952344712.

Almost surely, 2^221331302332 is an apocalyptic number.

It is an amenable number.

221331302332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221331302332 is a wasteful number, since it uses less digits than its factorization.

221331302332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7904689380 (or 7904689378 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 221331302332 its reverse (233203133122), we get a palindrome (454534435454).

The spelling of 221331302332 in words is "two hundred twenty-one billion, three hundred thirty-one million, three hundred two thousand, three hundred thirty-two".