111109051 has 2 divisors, whose sum is σ = 111109052. Its totient is φ = 111109050.

The previous prime is 111109049. The next prime is 111109111. The reversal of 111109051 is 150901111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111109051 - 2¹ = 111109049 is a prime.

Together with 111109049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111109001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55554525 + 55554526.

It is an arithmetic number, because the mean of its divisors is an integer number (55554526).

Almost surely, 2^111109051 is an apocalyptic number.

111109051 is a deficient number, since it is larger than the sum of its proper divisors (1).

111109051 is an equidigital number, since it uses as much as digits as its factorization.

111109051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 19.

The square root of 111109051 is about 10540.8278137915. The cubic root of 111109051 is about 480.7468855564.

The spelling of 111109051 in words is "one hundred eleven million, one hundred nine thousand, fifty-one".