111801056 has 12 divisors (see below), whose sum is σ = 220108392. Its totient is φ = 55900512.

The previous prime is 111801043. The next prime is 111801121. The reversal of 111801056 is 650108111.

It is a happy number.

It is a super-2 number, since 2×111801056² = 24998952245430272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1746860 + ... + 1746923.

It is an arithmetic number, because the mean of its divisors is an integer number (18342366).

Almost surely, 2^111801056 is an apocalyptic number.

111801056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

111801056 is a deficient number, since it is larger than the sum of its proper divisors (108307336).

111801056 is an equidigital number, since it uses as much as digits as its factorization.

111801056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493793 (or 3493785 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 111801056 is about 10573.6018461071. The cubic root of 111801056 is about 481.7428769286.

Adding to 111801056 its reverse (650108111), we get a palindrome (761909167).

The spelling of 111801056 in words is "one hundred eleven million, eight hundred one thousand, fifty-six".