108234721381 has 2 divisors, whose sum is σ = 108234721382. Its totient is φ = 108234721380.

The previous prime is 108234721367. The next prime is 108234721393. The reversal of 108234721381 is 183127432801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67052513025 + 41182208356 = 258945^2 + 202934^2 .

It is a cyclic number.

It is not a de Polignac number, because 108234721381 - 2¹⁷ = 108234590309 is a prime.

It is a super-2 number, since 2×108234721381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108234721481) 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 as a sum of consecutive naturals, namely, 54117360690 + 54117360691.

It is an arithmetic number, because the mean of its divisors is an integer number (54117360691).

Almost surely, 2^108234721381 is an apocalyptic number.

It is an amenable number.

108234721381 is a deficient number, since it is larger than the sum of its proper divisors (1).

108234721381 is an equidigital number, since it uses as much as digits as its factorization.

108234721381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 108234721381 in words is "one hundred eight billion, two hundred thirty-four million, seven hundred twenty-one thousand, three hundred eighty-one".