109212043 has 2 divisors, whose sum is σ = 109212044. Its totient is φ = 109212042.

The previous prime is 109212023. The next prime is 109212079. The reversal of 109212043 is 340212901.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109212043 is a prime.

It is not a weakly prime, because it can be changed into another prime (109212023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54606021 + 54606022.

It is an arithmetic number, because the mean of its divisors is an integer number (54606022).

Almost surely, 2^109212043 is an apocalyptic number.

109212043 is a deficient number, since it is larger than the sum of its proper divisors (1).

109212043 is an equidigital number, since it uses as much as digits as its factorization.

109212043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 109212043 is about 10450.4565928958. The cubic root of 109212043 is about 477.9951724797.

Adding to 109212043 its reverse (340212901), we get a palindrome (449424944).

The spelling of 109212043 in words is "one hundred nine million, two hundred twelve thousand, forty-three".