12255212000 has 48 divisors (see below), whose sum is σ = 30111065712. Its totient is φ = 4902083200.

The previous prime is 12255211999. The next prime is 12255212029. The reversal of 12255212000 is 21255221.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1527902 + ... + 1535901.

It is an arithmetic number, because the mean of its divisors is an integer number (627313869).

Almost surely, 2^12255212000 is an apocalyptic number.

12255212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12255212000 is an abundant number, since it is smaller than the sum of its proper divisors (17855853712).

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

12255212000 is an equidigital number, since it uses as much as digits as its factorization.

12255212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063828 (or 3063810 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 12255212000 its reverse (21255221), we get a palindrome (12276467221).

The spelling of 12255212000 in words is "twelve billion, two hundred fifty-five million, two hundred twelve thousand".