11021100001212 has 240 divisors, whose sum is σ = 30520136989440. Its totient is φ = 3094698829824.

The previous prime is 11021100001201. The next prime is 11021100001381. The reversal of 11021100001212 is 21210000112011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 461527489 + ... + 461551367.

It is an arithmetic number, because the mean of its divisors is an integer number (127167237456).

Almost surely, 2^{11021100001212} is an apocalyptic number.

11021100001212 is a gapful number since it is divisible by the number (12) 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 11021100001212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15260068494720).

11021100001212 is an abundant number, since it is smaller than the sum of its proper divisors (19499036988228).

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

11021100001212 is a wasteful number, since it uses less digits than its factorization.

11021100001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24190 (or 24167 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11021100001212 its reverse (21210000112011), we get a palindrome (32231100113223).

The spelling of 11021100001212 in words is "eleven trillion, twenty-one billion, one hundred million, one thousand, two hundred twelve".