1123223112 has 80 divisors (see below), whose sum is σ = 3432092400. Its totient is φ = 340368480.

The previous prime is 1123223111. The next prime is 1123223113. The reversal of 1123223112 is 2113223211.

It is an interprime number because it is at equal distance from previous prime (1123223111) and next prime (1123223113).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1123223111) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 71662 + ... + 85917.

It is an arithmetic number, because the mean of its divisors is an integer number (42901155).

Almost surely, 2^1123223112 is an apocalyptic number.

1123223112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123223112 is an abundant number, since it is smaller than the sum of its proper divisors (2308869288).

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

1123223112 is a wasteful number, since it uses less digits than its factorization.

1123223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157608 (or 157595 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1123223112 is about 33514.5209125835. The cubic root of 1123223112 is about 1039.4940561744.

Adding to 1123223112 its reverse (2113223211), we get a palindrome (3236446323).

Subtracting 1123223112 from its reverse (2113223211), we obtain a palindrome (990000099).

The spelling of 1123223112 in words is "one billion, one hundred twenty-three million, two hundred twenty-three thousand, one hundred twelve".