221534403655066 has 8 divisors (see below), whose sum is σ = 332556633579744. Its totient is φ = 110682192461820.

The previous prime is 221534403655043. The next prime is 221534403655067. The reversal of 221534403655066 is 660556304435122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221534403655067) 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, 42504679600 + ... + 42504684811.

It is an arithmetic number, because the mean of its divisors is an integer number (41569579197468).

Almost surely, 2^{221534403655066} is an apocalyptic number.

221534403655066 is a deficient number, since it is larger than the sum of its proper divisors (111022229924678).

221534403655066 is a wasteful number, since it uses less digits than its factorization.

221534403655066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85009365716.

The product of its (nonzero) digits is 15552000, while the sum is 52.

The spelling of 221534403655066 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred three million, six hundred fifty-five thousand, sixty-six".