11012220012 has 48 divisors (see below), whose sum is σ = 26385206400. Its totient is φ = 3572595840.

The previous prime is 11012219963. The next prime is 11012220041. The reversal of 11012220012 is 21002221011.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11012220012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179439 + ... + 232857.

It is an arithmetic number, because the mean of its divisors is an integer number (549691800).

Almost surely, 2^11012220012 is an apocalyptic number.

11012220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11012220012 is an abundant number, since it is smaller than the sum of its proper divisors (15372986388).

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

11012220012 is a wasteful number, since it uses less digits than its factorization.

11012220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53886 (or 53884 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11012220012 its reverse (21002221011), we get a palindrome (32014441023).

Subtracting 11012220012 from its reverse (21002221011), we obtain a palindrome (9990000999).

The spelling of 11012220012 in words is "eleven billion, twelve million, two hundred twenty thousand, twelve".