108290800021 has 2 divisors, whose sum is σ = 108290800022. Its totient is φ = 108290800020.

The previous prime is 108290799997. The next prime is 108290800027. The reversal of 108290800021 is 120008092801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75633250225 + 32657549796 = 275015^2 + 180714^2 .

It is a cyclic number.

It is not a de Polignac number, because 108290800021 - 2⁹ = 108290799509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108290800027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54145400010 + 54145400011.

It is an arithmetic number, because the mean of its divisors is an integer number (54145400011).

Almost surely, 2^108290800021 is an apocalyptic number.

It is an amenable number.

108290800021 is a deficient number, since it is larger than the sum of its proper divisors (1).

108290800021 is an equidigital number, since it uses as much as digits as its factorization.

108290800021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

Adding to 108290800021 its reverse (120008092801), we get a palindrome (228298892822).

The spelling of 108290800021 in words is "one hundred eight billion, two hundred ninety million, eight hundred thousand, twenty-one".