221021310232 has 16 divisors (see below), whose sum is σ = 432432998640. Its totient is φ = 105705843936.

The previous prime is 221021310229. The next prime is 221021310247. The reversal of 221021310232 is 232013120122.

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, 600601203 + ... + 600601570.

It is an arithmetic number, because the mean of its divisors is an integer number (27027062415).

Almost surely, 2^221021310232 is an apocalyptic number.

It is an amenable number.

221021310232 is a deficient number, since it is larger than the sum of its proper divisors (211411688408).

221021310232 is a wasteful number, since it uses less digits than its factorization.

221021310232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201202802 (or 1201202798 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221021310232 its reverse (232013120122), we get a palindrome (453034430354).

The spelling of 221021310232 in words is "two hundred twenty-one billion, twenty-one million, three hundred ten thousand, two hundred thirty-two".