221345639044 has 12 divisors (see below), whose sum is σ = 407741966800. Its totient is φ = 104847934248.

The previous prime is 221345639029. The next prime is 221345639093. The reversal of 221345639044 is 440936543122.

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 3 ways as a sum of consecutive naturals, for example, 1456221234 + ... + 1456221385.

Almost surely, 2^221345639044 is an apocalyptic number.

It is an amenable number.

221345639044 is a deficient number, since it is larger than the sum of its proper divisors (186396327756).

221345639044 is a wasteful number, since it uses less digits than its factorization.

221345639044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912442642 (or 2912442640 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 221345639044 in words is "two hundred twenty-one billion, three hundred forty-five million, six hundred thirty-nine thousand, forty-four".