12231213000 has 128 divisors (see below), whose sum is σ = 38200705920. Its totient is φ = 3258297600.

The previous prime is 12231212993. The next prime is 12231213011. The reversal of 12231213000 is 31213221.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 4567662 + ... + 4570338.

It is an arithmetic number, because the mean of its divisors is an integer number (298443015).

Almost surely, 2^12231213000 is an apocalyptic number.

12231213000 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 12231213000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19100352960).

12231213000 is an abundant number, since it is smaller than the sum of its proper divisors (25969492920).

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

12231213000 is a wasteful number, since it uses less digits than its factorization.

12231213000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224 (or 4210 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12231213000 its reverse (31213221), we get a palindrome (12262426221).

The spelling of 12231213000 in words is "twelve billion, two hundred thirty-one million, two hundred thirteen thousand".