221041982 has 16 divisors (see below), whose sum is σ = 379180032. Its totient is φ = 94669560.

The previous prime is 221041981. The next prime is 221041993. The reversal of 221041982 is 289140122.

221041982 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221041981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21323 + ... + 29945.

It is an arithmetic number, because the mean of its divisors is an integer number (23698752).

Almost surely, 2^221041982 is an apocalyptic number.

221041982 is a deficient number, since it is larger than the sum of its proper divisors (158138050).

221041982 is a wasteful number, since it uses less digits than its factorization.

221041982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10463.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 221041982 is about 14867.4806877292. The cubic root of 221041982 is about 604.6326408582.

The spelling of 221041982 in words is "two hundred twenty-one million, forty-one thousand, nine hundred eighty-two".