11231215221200 has 180 divisors, whose sum is σ = 30160802763648. Its totient is φ = 4013138188800.

The previous prime is 11231215221197. The next prime is 11231215221217. The reversal of 11231215221200 is 212251213211.

It is a super-2 number, since 2×11231215221200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 584114 + ... + 4775313.

Almost surely, 2^{11231215221200} is an apocalyptic number.

11231215221200 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 11231215221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15080401381824).

11231215221200 is an abundant number, since it is smaller than the sum of its proper divisors (18929587542448).

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

11231215221200 is a wasteful number, since it uses less digits than its factorization.

11231215221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5359502 (or 5359478 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 11231215221200 its reverse (212251213211), we get a palindrome (11443466434411).

The spelling of 11231215221200 in words is "eleven trillion, two hundred thirty-one billion, two hundred fifteen million, two hundred twenty-one thousand, two hundred".