12225443123100 has 144 divisors (see below), whose sum is σ = 37274512889600. Its totient is φ = 3085170923520.

The previous prime is 12225443123053. The next prime is 12225443123107. The reversal of 12225443123100 is 132134452221.

It is a happy number.

It is a super-2 number, since 2×12225443123100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225443123107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4071372 + ... + 6405228.

Almost surely, 2^{12225443123100} is an apocalyptic number.

12225443123100 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 12225443123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18637256444800).

12225443123100 is an abundant number, since it is smaller than the sum of its proper divisors (25049069766500).

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

12225443123100 is a wasteful number, since it uses less digits than its factorization.

12225443123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334812 (or 2334805 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12225443123100 its reverse (132134452221), we get a palindrome (12357577575321).

The spelling of 12225443123100 in words is "twelve trillion, two hundred twenty-five billion, four hundred forty-three million, one hundred twenty-three thousand, one hundred".