12211213231000 has 128 divisors (see below), whose sum is σ = 32715984038400. Its totient is φ = 4179046435200.

The previous prime is 12211213230967. The next prime is 12211213231093. The reversal of 12211213231000 is 13231211221.

It is a super-2 number, since 2×12211213231000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2234431 + ... + 5423569.

It is an arithmetic number, because the mean of its divisors is an integer number (255593625300).

Almost surely, 2^{12211213231000} is an apocalyptic number.

12211213231000 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 12211213231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16357992019200).

12211213231000 is an abundant number, since it is smaller than the sum of its proper divisors (20504770807400).

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

12211213231000 is a wasteful number, since it uses less digits than its factorization.

12211213231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189714 (or 3189700 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12211213231000 its reverse (13231211221), we get a palindrome (12224444442221).

The spelling of 12211213231000 in words is "twelve trillion, two hundred eleven billion, two hundred thirteen million, two hundred thirty-one thousand".