221465517442 has 64 divisors (see below), whose sum is σ = 374978419200. Its totient is φ = 97438775040.

The previous prime is 221465517407. The next prime is 221465517451. The reversal of 221465517442 is 244715564122.

221465517442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7844592 + ... + 7872772.

It is an arithmetic number, because the mean of its divisors is an integer number (5859037800).

Almost surely, 2^221465517442 is an apocalyptic number.

221465517442 is a deficient number, since it is larger than the sum of its proper divisors (153512901758).

221465517442 is a wasteful number, since it uses less digits than its factorization.

221465517442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28411.

The product of its digits is 537600, while the sum is 43.

The spelling of 221465517442 in words is "two hundred twenty-one billion, four hundred sixty-five million, five hundred seventeen thousand, four hundred forty-two".