222021982 has 32 divisors (see below), whose sum is σ = 417638592. Its totient is φ = 86171904.

The previous prime is 222021979. The next prime is 222021983. The reversal of 222021982 is 289120222.

It is a self number, because there is not a number n which added to its sum of digits gives 222021982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021983) 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 15 ways as a sum of consecutive naturals, for example, 1863 + ... + 21154.

It is an arithmetic number, because the mean of its divisors is an integer number (13051206).

Almost surely, 2^222021982 is an apocalyptic number.

222021982 is a deficient number, since it is larger than the sum of its proper divisors (195616610).

222021982 is a wasteful number, since it uses less digits than its factorization.

222021982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23092.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 222021982 is about 14900.4020751119. The cubic root of 222021982 is about 605.5248792897.

The spelling of 222021982 in words is "two hundred twenty-two million, twenty-one thousand, nine hundred eighty-two".