12211213232000 has 128 divisors (see below), whose sum is σ = 30364463844000. Its totient is φ = 4883787878400.

The previous prime is 12211213231999. The next prime is 12211213232003. The reversal of 12211213232000 is 23231211221.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×12211213232000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211213232003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120317276 + ... + 120418724.

Almost surely, 2^{12211213232000} is an apocalyptic number.

12211213232000 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 12211213232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15182231922000).

12211213232000 is an abundant number, since it is smaller than the sum of its proper divisors (18153250612000).

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

12211213232000 is an equidigital number, since it uses as much as digits as its factorization.

12211213232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109001 (or 108979 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12211213232000 its reverse (23231211221), we get a palindrome (12234444443221).

The spelling of 12211213232000 in words is "twelve trillion, two hundred eleven billion, two hundred thirteen million, two hundred thirty-two thousand".