221443046018 has 16 divisors (see below), whose sum is σ = 332835691200. Its totient is φ = 110497894416.

The previous prime is 221443046017. The next prime is 221443046051. The reversal of 221443046018 is 810640344122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221443046017) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6765380 + ... + 6798032.

It is an arithmetic number, because the mean of its divisors is an integer number (20802230700).

Almost surely, 2^221443046018 is an apocalyptic number.

221443046018 is a deficient number, since it is larger than the sum of its proper divisors (111392645182).

221443046018 is a wasteful number, since it uses less digits than its factorization.

221443046018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39401.

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 221443046018 in words is "two hundred twenty-one billion, four hundred forty-three million, forty-six thousand, eighteen".