221330124104 has 8 divisors (see below), whose sum is σ = 414993982710. Its totient is φ = 110665062048.

The previous prime is 221330124091. The next prime is 221330124137. The reversal of 221330124104 is 401421033122.

It can be written as a sum of positive squares in only one way, i.e., 167829508900 + 53500615204 = 409670^2 + 231302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 221330124104.

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, 13833132749 + ... + 13833132764.

Almost surely, 2^221330124104 is an apocalyptic number.

It is an amenable number.

221330124104 is a deficient number, since it is larger than the sum of its proper divisors (193663858606).

221330124104 is a wasteful number, since it uses less digits than its factorization.

221330124104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27666265519 (or 27666265515 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221330124104 its reverse (401421033122), we get a palindrome (622751157226).

The spelling of 221330124104 in words is "two hundred twenty-one billion, three hundred thirty million, one hundred twenty-four thousand, one hundred four".