11021212200120 has 128 divisors (see below), whose sum is σ = 33232913280000. Its totient is φ = 2923945896960.

The previous prime is 11021212200113. The next prime is 11021212200121. The reversal of 11021212200120 is 2100221212011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11021212200120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021212200121) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 442269021 + ... + 442293939.

It is an arithmetic number, because the mean of its divisors is an integer number (259632135000).

Almost surely, 2^{11021212200120} is an apocalyptic number.

11021212200120 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 11021212200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16616456640000).

11021212200120 is an abundant number, since it is smaller than the sum of its proper divisors (22211701079880).

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

11021212200120 is a wasteful number, since it uses less digits than its factorization.

11021212200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43653 (or 43649 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11021212200120 its reverse (2100221212011), we get a palindrome (13121433412131).

The spelling of 11021212200120 in words is "eleven trillion, twenty-one billion, two hundred twelve million, two hundred thousand, one hundred twenty".