221332310132 has 6 divisors (see below), whose sum is σ = 387331542738. Its totient is φ = 110666155064.

The previous prime is 221332310083. The next prime is 221332310149. The reversal of 221332310132 is 231013233122.

It can be written as a sum of positive squares in only one way, i.e., 161832416656 + 59499893476 = 402284^2 + 243926^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221332310098 and 221332310107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27666538763 + ... + 27666538770.

It is an arithmetic number, because the mean of its divisors is an integer number (64555257123).

Almost surely, 2^221332310132 is an apocalyptic number.

It is an amenable number.

221332310132 is a deficient number, since it is larger than the sum of its proper divisors (165999232606).

221332310132 is a wasteful number, since it uses less digits than its factorization.

221332310132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55333077537 (or 55333077535 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 221332310132 its reverse (231013233122), we get a palindrome (452345543254).

The spelling of 221332310132 in words is "two hundred twenty-one billion, three hundred thirty-two million, three hundred ten thousand, one hundred thirty-two".