109111901 has 2 divisors, whose sum is σ = 109111902. Its totient is φ = 109111900.

The previous prime is 109111879. The next prime is 109111903.

It is a happy number.

109111901 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72267001 + 36844900 = 8501^2 + 6070^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 109111901 - 2⁶ = 109111837 is a prime.

Together with 109111903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109111903) 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, 54555950 + 54555951.

It is an arithmetic number, because the mean of its divisors is an integer number (54555951).

Almost surely, 2^109111901 is an apocalyptic number.

It is an amenable number.

109111901 is a deficient number, since it is larger than the sum of its proper divisors (1).

109111901 is an equidigital number, since it uses as much as digits as its factorization.

109111901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 23.

The square root of 109111901 is about 10445.6642201442. The cubic root of 109111901 is about 477.8490285522.

The spelling of 109111901 in words is "one hundred nine million, one hundred eleven thousand, nine hundred one".