221432337066676 has 12 divisors (see below), whose sum is σ = 387761026246272. Its totient is φ = 110643472424888.

The previous prime is 221432337066659. The next prime is 221432337066679. The reversal of 221432337066676 is 676660733234122.

It is a self number, because there is not a number n which added to its sum of digits gives 221432337066676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221432337066679) 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, 18174020260 + ... + 18174032443.

It is an arithmetic number, because the mean of its divisors is an integer number (32313418853856).

Almost surely, 2^{221432337066676} is an apocalyptic number.

It is an amenable number.

221432337066676 is a deficient number, since it is larger than the sum of its proper divisors (166328689179596).

221432337066676 is a wasteful number, since it uses less digits than its factorization.

221432337066676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36348054230 (or 36348054228 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 58.

The spelling of 221432337066676 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, three hundred thirty-seven million, sixty-six thousand, six hundred seventy-six".