11220120002120 has 128 divisors (see below), whose sum is σ = 26451891671040. Its totient is φ = 4275163411200.

The previous prime is 11220120002107. The next prime is 11220120002123. The reversal of 11220120002120 is 2120002102211.

It is a junction number, because it is equal to n+sod(n) for n = 11220120002095 and 11220120002104.

It is not an unprimeable number, because it can be changed into a prime (11220120002123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 980174237 + ... + 980185683.

It is an arithmetic number, because the mean of its divisors is an integer number (206655403680).

Almost surely, 2^{11220120002120} is an apocalyptic number.

11220120002120 is a gapful number since it is divisible by the number (10) 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 11220120002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13225945835520).

11220120002120 is an abundant number, since it is smaller than the sum of its proper divisors (15231771668920).

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

11220120002120 is a wasteful number, since it uses less digits than its factorization.

11220120002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15795 (or 15791 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11220120002120 its reverse (2120002102211), we get a palindrome (13340122104331).

The spelling of 11220120002120 in words is "eleven trillion, two hundred twenty billion, one hundred twenty million, two thousand, one hundred twenty".