221956112792 has 16 divisors (see below), whose sum is σ = 421435658400. Its totient is φ = 109573270560.

The previous prime is 221956112773. The next prime is 221956112831. The reversal of 221956112792 is 297211659122.

It is a happy number.

221956112792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 175597559 + ... + 175598822.

It is an arithmetic number, because the mean of its divisors is an integer number (26339728650).

Almost surely, 2^221956112792 is an apocalyptic number.

It is an amenable number.

221956112792 is a deficient number, since it is larger than the sum of its proper divisors (199479545608).

221956112792 is a wasteful number, since it uses less digits than its factorization.

221956112792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351196466 (or 351196462 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The spelling of 221956112792 in words is "two hundred twenty-one billion, nine hundred fifty-six million, one hundred twelve thousand, seven hundred ninety-two".