100221983 has 2 divisors, whose sum is σ = 100221984. Its totient is φ = 100221982.

The previous prime is 100221931. The next prime is 100222009. The reversal of 100221983 is 389122001.

It is an a-pointer prime, because the next prime (100222009) can be obtained adding 100221983 to its sum of digits (26).

It is a strong prime.

It is an emirp because it is prime and its reverse (389122001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100221983 - 2⁸ = 100221727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110991 + 50110992.

It is an arithmetic number, because the mean of its divisors is an integer number (50110992).

Almost surely, 2^100221983 is an apocalyptic number.

100221983 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221983 is an equidigital number, since it uses as much as digits as its factorization.

100221983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 100221983 is about 10011.0929972706. The cubic root of 100221983 is about 464.5020808111.

Adding to 100221983 its reverse (389122001), we get a palindrome (489343984).

The spelling of 100221983 in words is "one hundred million, two hundred twenty-one thousand, nine hundred eighty-three".