109019111 has 2 divisors, whose sum is σ = 109019112. Its totient is φ = 109019110.

The previous prime is 109019107. The next prime is 109019137. The reversal of 109019111 is 111910901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109019111 - 2² = 109019107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109019101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54509555 + 54509556.

It is an arithmetic number, because the mean of its divisors is an integer number (54509556).

Almost surely, 2^109019111 is an apocalyptic number.

109019111 is a deficient number, since it is larger than the sum of its proper divisors (1).

109019111 is an equidigital number, since it uses as much as digits as its factorization.

109019111 is an evil number, because the sum of its binary digits is even.

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

The square root of 109019111 is about 10441.2217197031. The cubic root of 109019111 is about 477.7135340557.

The spelling of 109019111 in words is "one hundred nine million, nineteen thousand, one hundred eleven".