108244021 has 2 divisors, whose sum is σ = 108244022. Its totient is φ = 108244020.

The previous prime is 108244013. The next prime is 108244027. The reversal of 108244021 is 120442801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106708900 + 1535121 = 10330^2 + 1239^2 .

It is an emirp because it is prime and its reverse (120442801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108244021 - 2³ = 108244013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 108243983 and 108244001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108244027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54122010 + 54122011.

It is an arithmetic number, because the mean of its divisors is an integer number (54122011).

Almost surely, 2^108244021 is an apocalyptic number.

It is an amenable number.

108244021 is a deficient number, since it is larger than the sum of its proper divisors (1).

108244021 is an equidigital number, since it uses as much as digits as its factorization.

108244021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 108244021 is about 10404.0386869715. The cubic root of 108244021 is about 476.5787117180.

Adding to 108244021 its reverse (120442801), we get a palindrome (228686822).

The spelling of 108244021 in words is "one hundred eight million, two hundred forty-four thousand, twenty-one".