2011112111020 has 12 divisors (see below), whose sum is σ = 4223335433184. Its totient is φ = 804444844400.

The previous prime is 2011112110937. The next prime is 2011112111033. The reversal of 2011112111020 is 201112111102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50277802756 + ... + 50277802795.

It is an arithmetic number, because the mean of its divisors is an integer number (351944619432).

Almost surely, 2^{2011112111020} is an apocalyptic number.

2011112111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011112111020 is an abundant number, since it is smaller than the sum of its proper divisors (2212223322164).

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

2011112111020 is a wasteful number, since it uses less digits than its factorization.

2011112111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100555605560 (or 100555605558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2011112111020 its reverse (201112111102), we get a palindrome (2212224222122).

The spelling of 2011112111020 in words is "two trillion, eleven billion, one hundred twelve million, one hundred eleven thousand, twenty".