111561106 has 8 divisors (see below), whose sum is σ = 177185340. Its totient is φ = 52499328.

The previous prime is 111561101. The next prime is 111561119. The reversal of 111561106 is 601165111.

It can be written as a sum of positive squares in 2 ways, for example, as 92332881 + 19228225 = 9609^2 + 4385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (111561101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640571 + ... + 1640638.

Almost surely, 2^111561106 is an apocalyptic number.

111561106 is a deficient number, since it is larger than the sum of its proper divisors (65624234).

111561106 is a wasteful number, since it uses less digits than its factorization.

111561106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281228.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 111561106 is about 10562.2490976117. The cubic root of 111561106 is about 481.3979875236.

The spelling of 111561106 in words is "one hundred eleven million, five hundred sixty-one thousand, one hundred six".