12222212000 has 96 divisors (see below), whose sum is σ = 30328303824. Its totient is φ = 4840320000.

The previous prime is 12222211979. The next prime is 12222212003. The reversal of 12222212000 is 21222221.

It can be written as a sum of positive squares in 8 ways, for example, as 5824131856 + 6398080144 = 76316^2 + 79988^2 .

It is not an unprimeable number, because it can be changed into a prime (12222212003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388874 + ... + 419126.

Almost surely, 2^12222212000 is an apocalyptic number.

12222212000 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 12222212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15164151912).

12222212000 is an abundant number, since it is smaller than the sum of its proper divisors (18106091824).

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

12222212000 is a wasteful number, since it uses less digits than its factorization.

12222212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30379 (or 30361 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12222212000 its reverse (21222221), we get a palindrome (12243434221).

It can be divided in two parts, 1222221 and 2000, that added together give a palindrome (1224221).

The spelling of 12222212000 in words is "twelve billion, two hundred twenty-two million, two hundred twelve thousand".