11120020011 has 16 divisors (see below), whose sum is σ = 16502977920. Its totient is φ = 7400353320.

The previous prime is 11120019961. The next prime is 11120020027. The reversal of 11120020011 is 11002002111.

It is a happy number.

It is not a de Polignac number, because 11120020011 - 2⁶ = 11120019947 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 11120019975 and 11120020002.

It is not an unprimeable number, because it can be changed into a prime (11120020111) 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, 345225 + ... + 376058.

It is an arithmetic number, because the mean of its divisors is an integer number (1031436120).

Almost surely, 2^11120020011 is an apocalyptic number.

11120020011 is a deficient number, since it is larger than the sum of its proper divisors (5382957909).

11120020011 is an equidigital number, since it uses as much as digits as its factorization.

11120020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721863 (or 721857 counting only the distinct ones).

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

Adding to 11120020011 its reverse (11002002111), we get a palindrome (22122022122).

The spelling of 11120020011 in words is "eleven billion, one hundred twenty million, twenty thousand, eleven".