11102020120 has 64 divisors (see below), whose sum is σ = 25875871200. Its totient is φ = 4281876480.

The previous prime is 11102020067. The next prime is 11102020129. The reversal of 11102020120 is 2102020111.

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 = 11102020097 and 11102020106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102020129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906840 + ... + 919000.

Almost surely, 2^11102020120 is an apocalyptic number.

11102020120 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 11102020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12937935600).

11102020120 is an abundant number, since it is smaller than the sum of its proper divisors (14773851080).

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

11102020120 is a wasteful number, since it uses less digits than its factorization.

11102020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12988 (or 12984 counting only the distinct ones).

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

Adding to 11102020120 its reverse (2102020111), we get a palindrome (13204040231).

Subtracting from 11102020120 its reverse (2102020111), we obtain a palindrome (9000000009).

The spelling of 11102020120 in words is "eleven billion, one hundred two million, twenty thousand, one hundred twenty".