108089021 has 2 divisors, whose sum is σ = 108089022. Its totient is φ = 108089020.

The previous prime is 108088999. The next prime is 108089053. The reversal of 108089021 is 120980801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106296100 + 1792921 = 10310^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 108089021 - 2²⁶ = 40980157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108082021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54044510 + 54044511.

It is an arithmetic number, because the mean of its divisors is an integer number (54044511).

Almost surely, 2^108089021 is an apocalyptic number.

It is an amenable number.

108089021 is a deficient number, since it is larger than the sum of its proper divisors (1).

108089021 is an equidigital number, since it uses as much as digits as its factorization.

108089021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 108089021 is about 10396.5869880456. The cubic root of 108089021 is about 476.3511241279.

The spelling of 108089021 in words is "one hundred eight million, eighty-nine thousand, twenty-one".