11220111111012 has 12 divisors (see below), whose sum is σ = 26180259259056. Its totient is φ = 3740037037000.

The previous prime is 11220111110983. The next prime is 11220111111019. The reversal of 11220111111012 is 21011111102211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 11220111110982 and 11220111111000.

It is not an unprimeable number, because it can be changed into a prime (11220111111019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467504629614 + ... + 467504629637.

It is an arithmetic number, because the mean of its divisors is an integer number (2181688271588).

Almost surely, 2^{11220111111012} is an apocalyptic number.

11220111111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11220111111012 is an abundant number, since it is smaller than the sum of its proper divisors (14960148148044).

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

11220111111012 is a wasteful number, since it uses less digits than its factorization.

11220111111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935009259258 (or 935009259256 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11220111111012 its reverse (21011111102211), we get a palindrome (32231222213223).

The spelling of 11220111111012 in words is "eleven trillion, two hundred twenty billion, one hundred eleven million, one hundred eleven thousand, twelve".