221334144442 has 16 divisors (see below), whose sum is σ = 335124915840. Its totient is φ = 109625968288.

The previous prime is 221334144439. The next prime is 221334144457. The reversal of 221334144442 is 244441433122.

It is a junction number, because it is equal to n+sod(n) for n = 221334144398 and 221334144407.

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 in 7 ways as a sum of consecutive naturals, for example, 6432159 + ... + 6466477.

It is an arithmetic number, because the mean of its divisors is an integer number (20945307240).

Almost surely, 2^221334144442 is an apocalyptic number.

221334144442 is a deficient number, since it is larger than the sum of its proper divisors (113790771398).

221334144442 is a wasteful number, since it uses less digits than its factorization.

221334144442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64565.

The product of its digits is 73728, while the sum is 34.

Adding to 221334144442 its reverse (244441433122), we get a palindrome (465775577564).

The spelling of 221334144442 in words is "two hundred twenty-one billion, three hundred thirty-four million, one hundred forty-four thousand, four hundred forty-two".