219982001 has 2 divisors, whose sum is σ = 219982002. Its totient is φ = 219982000.

The previous prime is 219981997. The next prime is 219982033. The reversal of 219982001 is 100289912.

It is a happy number.

It is an a-pointer prime, because the next prime (219982033) can be obtained adding 219982001 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195972001 + 24010000 = 13999^2 + 4900^2 .

It is a cyclic number.

It is not a de Polignac number, because 219982001 - 2² = 219981997 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (219982201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109991000 + 109991001.

It is an arithmetic number, because the mean of its divisors is an integer number (109991001).

Almost surely, 2^219982001 is an apocalyptic number.

It is an amenable number.

219982001 is a deficient number, since it is larger than the sum of its proper divisors (1).

219982001 is an equidigital number, since it uses as much as digits as its factorization.

219982001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 219982001 is about 14831.7902156146. The cubic root of 219982001 is about 603.6646101162.

The spelling of 219982001 in words is "two hundred nineteen million, nine hundred eighty-two thousand, one".