221320013132 has 6 divisors (see below), whose sum is σ = 387310022988. Its totient is φ = 110660006564.

The previous prime is 221320013111. The next prime is 221320013147. The reversal of 221320013132 is 231310023122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665001638 + ... + 27665001645.

It is an arithmetic number, because the mean of its divisors is an integer number (64551670498).

Almost surely, 2^221320013132 is an apocalyptic number.

It is an amenable number.

221320013132 is a deficient number, since it is larger than the sum of its proper divisors (165990009856).

221320013132 is a wasteful number, since it uses less digits than its factorization.

221320013132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55330003287 (or 55330003285 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221320013132 its reverse (231310023122), we get a palindrome (452630036254).

The spelling of 221320013132 in words is "two hundred twenty-one billion, three hundred twenty million, thirteen thousand, one hundred thirty-two".