221312342044 has 6 divisors (see below), whose sum is σ = 387296598584. Its totient is φ = 110656171020.

The previous prime is 221312342039. The next prime is 221312342077. The reversal of 221312342044 is 440243213122.

221312342044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27664042752 + ... + 27664042759.

Almost surely, 2^221312342044 is an apocalyptic number.

It is an amenable number.

221312342044 is a deficient number, since it is larger than the sum of its proper divisors (165984256540).

221312342044 is a wasteful number, since it uses less digits than its factorization.

221312342044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55328085515 (or 55328085513 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221312342044 its reverse (440243213122), we get a palindrome (661555555166).

The spelling of 221312342044 in words is "two hundred twenty-one billion, three hundred twelve million, three hundred forty-two thousand, forty-four".