221188619348 has 6 divisors (see below), whose sum is σ = 387080083866. Its totient is φ = 110594309672.

The previous prime is 221188619321. The next prime is 221188619389. The reversal of 221188619348 is 843916881122.

It can be written as a sum of positive squares in only one way, i.e., 221001531664 + 187087684 = 470108^2 + 13678^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221188619348.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27648577415 + ... + 27648577422.

It is an arithmetic number, because the mean of its divisors is an integer number (64513347311).

Almost surely, 2^221188619348 is an apocalyptic number.

It is an amenable number.

221188619348 is a deficient number, since it is larger than the sum of its proper divisors (165891464518).

221188619348 is a wasteful number, since it uses less digits than its factorization.

221188619348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55297154841 (or 55297154839 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 53.

The spelling of 221188619348 in words is "two hundred twenty-one billion, one hundred eighty-eight million, six hundred nineteen thousand, three hundred forty-eight".