221331313132 has 12 divisors (see below), whose sum is σ = 387365128360. Its totient is φ = 110655562176.

The previous prime is 221331313127. The next prime is 221331313213. The reversal of 221331313132 is 231313133122.

It is a junction number, because it is equal to n+sod(n) for n = 221331313097 and 221331313106.

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, 2474157 + ... + 2562052.

Almost surely, 2^221331313132 is an apocalyptic number.

It is an amenable number.

221331313132 is a deficient number, since it is larger than the sum of its proper divisors (166033815228).

221331313132 is a wasteful number, since it uses less digits than its factorization.

221331313132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5047200 (or 5047198 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 221331313132 its reverse (231313133122), we get a palindrome (452644446254).

The spelling of 221331313132 in words is "two hundred twenty-one billion, three hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-two".