11011221120012 has 24 divisors (see below), whose sum is σ = 25693399501056. Its totient is φ = 3670328437008.

The previous prime is 11011221119999. The next prime is 11011221120013. The reversal of 11011221120012 is 21002112211011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11011221119973 and 11011221120000.

It is not an unprimeable number, because it can be changed into a prime (11011221120013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9240288 + ... + 10363655.

It is an arithmetic number, because the mean of its divisors is an integer number (1070558312544).

Almost surely, 2^{11011221120012} is an apocalyptic number.

11011221120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11011221120012 is an abundant number, since it is smaller than the sum of its proper divisors (14682178381044).

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

11011221120012 is a wasteful number, since it uses less digits than its factorization.

11011221120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19650757 (or 19650755 counting only the distinct ones).

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

Adding to 11011221120012 its reverse (21002112211011), we get a palindrome (32013333331023).

The spelling of 11011221120012 in words is "eleven trillion, eleven billion, two hundred twenty-one million, one hundred twenty thousand, twelve".