1123202112 has 56 divisors (see below), whose sum is σ = 2999634336. Its totient is φ = 370894848.

The previous prime is 1123202083. The next prime is 1123202123. The reversal of 1123202112 is 2112023211.

It is a junction number, because it is equal to n+sod(n) for n = 1123202091 and 1123202100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6793 + ... + 47880.

Almost surely, 2^1123202112 is an apocalyptic number.

1123202112 is a gapful number since it is divisible by the number (12) 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 1123202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499817168).

1123202112 is an abundant number, since it is smaller than the sum of its proper divisors (1876432224).

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

1123202112 is a wasteful number, since it uses less digits than its factorization.

1123202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54795 (or 54785 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1123202112 is about 33514.2076140851. The cubic root of 1123202112 is about 1039.4875779389.

Adding to 1123202112 its reverse (2112023211), we get a palindrome (3235225323).

The spelling of 1123202112 in words is "one billion, one hundred twenty-three million, two hundred two thousand, one hundred twelve".