108621229 has 2 divisors, whose sum is σ = 108621230. Its totient is φ = 108621228.

The previous prime is 108621217. The next prime is 108621283. The reversal of 108621229 is 922126801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93644329 + 14976900 = 9677^2 + 3870^2 .

It is a cyclic number.

It is not a de Polignac number, because 108621229 - 2⁵ = 108621197 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108621229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108621209) 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, 54310614 + 54310615.

It is an arithmetic number, because the mean of its divisors is an integer number (54310615).

Almost surely, 2^108621229 is an apocalyptic number.

It is an amenable number.

108621229 is a deficient number, since it is larger than the sum of its proper divisors (1).

108621229 is an equidigital number, since it uses as much as digits as its factorization.

108621229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 108621229 is about 10422.1508816559. The cubic root of 108621229 is about 477.1316626178.

The spelling of 108621229 in words is "one hundred eight million, six hundred twenty-one thousand, two hundred twenty-nine".