11220220120020 has 96 divisors (see below), whose sum is σ = 32471622586368. Its totient is φ = 2893115912832.

The previous prime is 11220220120013. The next prime is 11220220120051. The reversal of 11220220120020 is 2002102202211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23734624 + ... + 24202743.

It is an arithmetic number, because the mean of its divisors is an integer number (338246068608).

Almost surely, 2^{11220220120020} is an apocalyptic number.

11220220120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220220120020 is an abundant number, since it is smaller than the sum of its proper divisors (21251402466348).

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

11220220120020 is a wasteful number, since it uses less digits than its factorization.

11220220120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47937509 (or 47937507 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11220220120020 its reverse (2002102202211), we get a palindrome (13222322322231).

The spelling of 11220220120020 in words is "eleven trillion, two hundred twenty billion, two hundred twenty million, one hundred twenty thousand, twenty".