12123331236 has 63 divisors (see below), whose sum is σ = 31824801211. Its totient is φ = 4039128504.

The previous prime is 12123331223. The next prime is 12123331267. The reversal of 12123331236 is 63213332121.

The square root of 12123331236 is 110106.

It is a perfect power (a square), and thus also a powerful number.

12123331236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 5944705 + ... + 5946743.

Almost surely, 2^12123331236 is an apocalyptic number.

12123331236 is the 110106-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12123331236

12123331236 is an abundant number, since it is smaller than the sum of its proper divisors (19701469975).

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

12123331236 is an frugal number, since it uses more digits than its factorization.

12123331236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100 (or 2044 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 12123331236 its reverse (63213332121), we get a palindrome (75336663357).

The spelling of 12123331236 in words is "twelve billion, one hundred twenty-three million, three hundred thirty-one thousand, two hundred thirty-six".