11220220122012 has 144 divisors (see below), whose sum is σ = 31432471918848. Its totient is φ = 3346327215360.

The previous prime is 11220220121953. The next prime is 11220220122029. The reversal of 11220220122012 is 21022102202211.

It is a happy number.

11220220122012 is a `hidden beast` number, since 1 + 1 + 220 + 220 + 1 + 220 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7995288 + ... + 9293280.

It is an arithmetic number, because the mean of its divisors is an integer number (218281054992).

Almost surely, 2^{11220220122012} is an apocalyptic number.

11220220122012 is a gapful number since it is divisible by the number (12) 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 11220220122012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15716235959424).

11220220122012 is an abundant number, since it is smaller than the sum of its proper divisors (20212251796836).

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

11220220122012 is a wasteful number, since it uses less digits than its factorization.

11220220122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298360 (or 1298355 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11220220122012 its reverse (21022102202211), we get a palindrome (32242322324223).

The spelling of 11220220122012 in words is "eleven trillion, two hundred twenty billion, two hundred twenty million, one hundred twenty-two thousand, twelve".