11212201222000 has 80 divisors (see below), whose sum is σ = 27118623796992. Its totient is φ = 4483636281600.

The previous prime is 11212201221971. The next prime is 11212201222007. The reversal of 11212201222000 is 22210221211.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212201222007) 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, 6450177 + ... + 8001823.

Almost surely, 2^{11212201222000} is an apocalyptic number.

11212201222000 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 11212201222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13559311898496).

11212201222000 is an abundant number, since it is smaller than the sum of its proper divisors (15906422574992).

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

11212201222000 is a wasteful number, since it uses less digits than its factorization.

11212201222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555283 (or 1555267 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11212201222000 its reverse (22210221211), we get a palindrome (11234411443211).

The spelling of 11212201222000 in words is "eleven trillion, two hundred twelve billion, two hundred one million, two hundred twenty-two thousand".