221656365364232 has 16 divisors (see below), whose sum is σ = 418358040590400. Its totient is φ = 110094221206800.

The previous prime is 221656365364223. The next prime is 221656365364237. The reversal of 221656365364232 is 232463563656122.

It is not an unprimeable number, because it can be changed into a prime (221656365364237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91745183132 + ... + 91745185547.

It is an arithmetic number, because the mean of its divisors is an integer number (26147377536900).

Almost surely, 2^{221656365364232} is an apocalyptic number.

It is an amenable number.

221656365364232 is a deficient number, since it is larger than the sum of its proper divisors (196701675226168).

221656365364232 is a wasteful number, since it uses less digits than its factorization.

221656365364232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183490368836 (or 183490368832 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 56.

The spelling of 221656365364232 in words is "two hundred twenty-one trillion, six hundred fifty-six billion, three hundred sixty-five million, three hundred sixty-four thousand, two hundred thirty-two".