221100221986 has 32 divisors (see below), whose sum is σ = 380762363520. Its totient is φ = 94324876800.

The previous prime is 221100221977. The next prime is 221100221999. The reversal of 221100221986 is 689122001122.

221100221986 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 15 ways as a sum of consecutive naturals, for example, 2663346 + ... + 2745106.

It is an arithmetic number, because the mean of its divisors is an integer number (11898823860).

Almost surely, 2^221100221986 is an apocalyptic number.

221100221986 is a deficient number, since it is larger than the sum of its proper divisors (159662141534).

221100221986 is a wasteful number, since it uses less digits than its factorization.

221100221986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82650.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 221100221986 in words is "two hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, nine hundred eighty-six".