111120090 has 16 divisors (see below), whose sum is σ = 266688288. Its totient is φ = 29632016.

The previous prime is 111120073. The next prime is 111120091. The reversal of 111120090 is 90021111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (111120091) 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 in 7 ways as a sum of consecutive naturals, for example, 1851972 + ... + 1852031.

It is an arithmetic number, because the mean of its divisors is an integer number (16668018).

Almost surely, 2^111120090 is an apocalyptic number.

111120090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111120090 is an abundant number, since it is smaller than the sum of its proper divisors (155568198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111120090 is a wasteful number, since it uses less digits than its factorization.

111120090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704013.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 111120090 is about 10541.3514313868. The cubic root of 111120090 is about 480.7628062190.

The spelling of 111120090 in words is "one hundred eleven million, one hundred twenty thousand, ninety".