1123112000 has 224 divisors, whose sum is σ = 2967045120. Its totient is φ = 420403200.

The previous prime is 1123111999. The next prime is 1123112083. The reversal of 1123112000 is 2113211.

It is a super-2 number, since 2×1123112000² = 2522761129088000000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10903949 + ... + 10904051.

Almost surely, 2^1123112000 is an apocalyptic number.

1123112000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483522560).

1123112000 is an abundant number, since it is smaller than the sum of its proper divisors (1843933120).

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

1123112000 is a wasteful number, since it uses less digits than its factorization.

1123112000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1123112000 is about 33512.8632020602. The cubic root of 1123112000 is about 1039.4597786056.

Adding to 1123112000 its reverse (2113211), we get a palindrome (1125225211).

The spelling of 1123112000 in words is "one billion, one hundred twenty-three million, one hundred twelve thousand".