12011222000 has 80 divisors (see below), whose sum is σ = 29300704992. Its totient is φ = 4761881600.

The previous prime is 12011221969. The next prime is 12011222063. The reversal of 12011222000 is 22211021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199427 + ... + 252573.

Almost surely, 2^12011222000 is an apocalyptic number.

12011222000 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 12011222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14650352496).

12011222000 is an abundant number, since it is smaller than the sum of its proper divisors (17289482992).

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

12011222000 is a wasteful number, since it uses less digits than its factorization.

12011222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53283 (or 53267 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12011222000 its reverse (22211021), we get a palindrome (12033433021).

The spelling of 12011222000 in words is "twelve billion, eleven million, two hundred twenty-two thousand".