11011212000000 has 378 divisors, whose sum is σ = 39684670232844. Its totient is φ = 2936313600000.

The previous prime is 11011211999969. The next prime is 11011212000013. The reversal of 11011212000000 is 21211011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 41 ways as a sum of consecutive naturals, for example, 35847067 + ... + 36152933.

Almost surely, 2^{11011212000000} is an apocalyptic number.

11011212000000 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 11011212000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19842335116422).

11011212000000 is an abundant number, since it is smaller than the sum of its proper divisors (28673458232844).

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

11011212000000 is an frugal number, since it uses more digits than its factorization.

11011212000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305919 (or 305877 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11011212000000 its reverse (21211011), we get a palindrome (11011233211011).

It can be divided in two parts, 1101121 and 2000000, that added together give a square (3101121 = 1761²).

The spelling of 11011212000000 in words is "eleven trillion, eleven billion, two hundred twelve million", and thus it is an aban number.