109221071 has 2 divisors, whose sum is σ = 109221072. Its totient is φ = 109221070.

The previous prime is 109221059. The next prime is 109221121. The reversal of 109221071 is 170122901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109221071 - 2¹⁰ = 109220047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54610535 + 54610536.

It is an arithmetic number, because the mean of its divisors is an integer number (54610536).

Almost surely, 2^109221071 is an apocalyptic number.

109221071 is a deficient number, since it is larger than the sum of its proper divisors (1).

109221071 is an equidigital number, since it uses as much as digits as its factorization.

109221071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 109221071 is about 10450.8885268191. Note that the first 3 decimals coincide. The cubic root of 109221071 is about 478.0083432541.

Adding to 109221071 its reverse (170122901), we get a palindrome (279343972).

The spelling of 109221071 in words is "one hundred nine million, two hundred twenty-one thousand, seventy-one".