109213171 has 2 divisors, whose sum is σ = 109213172. Its totient is φ = 109213170.

The previous prime is 109213141. The next prime is 109213187. The reversal of 109213171 is 171312901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109213171 is a prime.

It is not a weakly prime, because it can be changed into another prime (109213141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54606585 + 54606586.

It is an arithmetic number, because the mean of its divisors is an integer number (54606586).

Almost surely, 2^109213171 is an apocalyptic number.

109213171 is a deficient number, since it is larger than the sum of its proper divisors (1).

109213171 is an equidigital number, since it uses as much as digits as its factorization.

109213171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 109213171 is about 10450.5105616903. The cubic root of 109213171 is about 477.9968181368.

The spelling of 109213171 in words is "one hundred nine million, two hundred thirteen thousand, one hundred seventy-one".