12211231000 has 32 divisors (see below), whose sum is σ = 28574282880. Its totient is φ = 4884492000.

The previous prime is 12211230991. The next prime is 12211231007. The reversal of 12211231000 is 13211221.

12211231000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12211231000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211231007) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6104616 + ... + 6106615.

It is an arithmetic number, because the mean of its divisors is an integer number (892946340).

Almost surely, 2^12211231000 is an apocalyptic number.

12211231000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211231000 is an abundant number, since it is smaller than the sum of its proper divisors (16363051880).

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

12211231000 is a wasteful number, since it uses less digits than its factorization.

12211231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211252 (or 12211238 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12211231000 its reverse (13211221), we get a palindrome (12224442221).

The spelling of 12211231000 in words is "twelve billion, two hundred eleven million, two hundred thirty-one thousand".