108116621 has 2 divisors, whose sum is σ = 108116622. Its totient is φ = 108116620.

The previous prime is 108116609. The next prime is 108116639. The reversal of 108116621 is 126611801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100902025 + 7214596 = 10045^2 + 2686^2 .

It is a cyclic number.

It is not a de Polignac number, because 108116621 - 2²² = 103922317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108116641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54058310 + 54058311.

It is an arithmetic number, because the mean of its divisors is an integer number (54058311).

Almost surely, 2^108116621 is an apocalyptic number.

It is an amenable number.

108116621 is a deficient number, since it is larger than the sum of its proper divisors (1).

108116621 is an equidigital number, since it uses as much as digits as its factorization.

108116621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 108116621 is about 10397.9142620047. The cubic root of 108116621 is about 476.3916653165.

The spelling of 108116621 in words is "one hundred eight million, one hundred sixteen thousand, six hundred twenty-one".