108078124421 has 2 divisors, whose sum is σ = 108078124422. Its totient is φ = 108078124420.

The previous prime is 108078124411. The next prime is 108078124463. The reversal of 108078124421 is 124421870801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102585684100 + 5492440321 = 320290^2 + 74111^2 .

It is a cyclic number.

It is not a de Polignac number, because 108078124421 - 2¹⁰ = 108078123397 is a prime.

It is a super-2 number, since 2×108078124421² (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 (108078124411) 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, 54039062210 + 54039062211.

It is an arithmetic number, because the mean of its divisors is an integer number (54039062211).

Almost surely, 2^108078124421 is an apocalyptic number.

It is an amenable number.

108078124421 is a deficient number, since it is larger than the sum of its proper divisors (1).

108078124421 is an equidigital number, since it uses as much as digits as its factorization.

108078124421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28672, while the sum is 38.

The spelling of 108078124421 in words is "one hundred eight billion, seventy-eight million, one hundred twenty-four thousand, four hundred twenty-one".