11211021120012 has 72 divisors (see below), whose sum is σ = 30433045008240. Its totient is φ = 3202819361280.

The previous prime is 11211021119999. The next prime is 11211021120031. The reversal of 11211021120012 is 21002112011211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11211021119973 and 11211021120000.

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 23 ways as a sum of consecutive naturals, for example, 4768312 + ... + 6720032.

It is an arithmetic number, because the mean of its divisors is an integer number (422681180670).

Almost surely, 2^{11211021120012} is an apocalyptic number.

11211021120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211021120012 is an abundant number, since it is smaller than the sum of its proper divisors (19222023888228).

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

11211021120012 is a wasteful number, since it uses less digits than its factorization.

11211021120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961511 (or 1961502 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211021120012 its reverse (21002112011211), we get a palindrome (32213133131223).

The spelling of 11211021120012 in words is "eleven trillion, two hundred eleven billion, twenty-one million, one hundred twenty thousand, twelve".