1223432112 has 160 divisors (see below), whose sum is σ = 3781980160. Its totient is φ = 333434880.

The previous prime is 1223432107. The next prime is 1223432117. The reversal of 1223432112 is 2112343221.

It is an interprime number because it is at equal distance from previous prime (1223432107) and next prime (1223432117).

It is a super-2 number, since 2×1223432112² = 2993572265345561088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 (1223432117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 759564 + ... + 761172.

It is an arithmetic number, because the mean of its divisors is an integer number (23637376).

Almost surely, 2^1223432112 is an apocalyptic number.

1223432112 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 1223432112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890990080).

1223432112 is an abundant number, since it is smaller than the sum of its proper divisors (2558548048).

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

1223432112 is a wasteful number, since it uses less digits than its factorization.

1223432112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731 (or 1725 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1223432112 is about 34977.5944284338. The cubic root of 1223432112 is about 1069.5307902865.

Adding to 1223432112 its reverse (2112343221), we get a palindrome (3335775333).

The spelling of 1223432112 in words is "one billion, two hundred twenty-three million, four hundred thirty-two thousand, one hundred twelve".