221242642223603 has 48 divisors (see below), whose sum is σ = 304046727183360. Its totient is φ = 158246540424000.

The previous prime is 221242642223599. The next prime is 221242642223611. The reversal of 221242642223603 is 306322246242122.

It is not a de Polignac number, because 221242642223603 - 2² = 221242642223599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221242642223903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86942723 + ... + 89451228.

It is an arithmetic number, because the mean of its divisors is an integer number (6334306816320).

Almost surely, 2^{221242642223603} is an apocalyptic number.

221242642223603 is a deficient number, since it is larger than the sum of its proper divisors (82804084959757).

221242642223603 is a wasteful number, since it uses less digits than its factorization.

221242642223603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176394168 (or 176394161 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 41.

Adding to 221242642223603 its reverse (306322246242122), we get a palindrome (527564888465725).

The spelling of 221242642223603 in words is "two hundred twenty-one trillion, two hundred forty-two billion, six hundred forty-two million, two hundred twenty-three thousand, six hundred three".