11101020120 has 48 divisors (see below), whose sum is σ = 36078316560. Its totient is φ = 2960271936.

The previous prime is 11101020109. The next prime is 11101020163. The reversal of 11101020120 is 2102010111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15417724 + ... + 15418443.

It is an arithmetic number, because the mean of its divisors is an integer number (751631595).

Almost surely, 2^11101020120 is an apocalyptic number.

11101020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101020120 is an abundant number, since it is smaller than the sum of its proper divisors (24977296440).

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

11101020120 is a wasteful number, since it uses less digits than its factorization.

11101020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30836184 (or 30836177 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11101020120 its reverse (2102010111), we get a palindrome (13203030231).

The spelling of 11101020120 in words is "eleven billion, one hundred one million, twenty thousand, one hundred twenty".