111004891 has 2 divisors, whose sum is σ = 111004892. Its totient is φ = 111004890.

The previous prime is 111004871. The next prime is 111004913. The reversal of 111004891 is 198400111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111004891 - 2⁹ = 111004379 is a prime.

It is not a weakly prime, because it can be changed into another prime (111004871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55502445 + 55502446.

It is an arithmetic number, because the mean of its divisors is an integer number (55502446).

Almost surely, 2^111004891 is an apocalyptic number.

111004891 is a deficient number, since it is larger than the sum of its proper divisors (1).

111004891 is an equidigital number, since it uses as much as digits as its factorization.

111004891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 111004891 is about 10535.8858668837. The cubic root of 111004891 is about 480.5966120161.

The spelling of 111004891 in words is "one hundred eleven million, four thousand, eight hundred ninety-one".