11201020120 has 96 divisors (see below), whose sum is σ = 25943943600. Its totient is φ = 4352199936.

The previous prime is 11201020097. The next prime is 11201020147. The reversal of 11201020120 is 2102010211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11201020097 and 11201020106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19894959 + ... + 19895521.

Almost surely, 2^11201020120 is an apocalyptic number.

11201020120 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 11201020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12971971800).

11201020120 is an abundant number, since it is smaller than the sum of its proper divisors (14742923480).

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

11201020120 is a wasteful number, since it uses less digits than its factorization.

11201020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11201020120 its reverse (2102010211), we get a palindrome (13303030331).

Subtracting from 11201020120 its reverse (2102010211), we obtain a palindrome (9099009909).

The spelling of 11201020120 in words is "eleven billion, two hundred one million, twenty thousand, one hundred twenty".