2011111120120 has 32 divisors (see below), whose sum is σ = 4526246560320. Its totient is φ = 804222840960.

The previous prime is 2011111120111. The next prime is 2011111120157. The reversal of 2011111120120 is 210211111102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011111120120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6778167 + ... + 7068646.

It is an arithmetic number, because the mean of its divisors is an integer number (141445205010).

Almost surely, 2^{2011111120120} is an apocalyptic number.

2011111120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011111120120 is an abundant number, since it is smaller than the sum of its proper divisors (2515135440200).

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

2011111120120 is a wasteful number, since it uses less digits than its factorization.

2011111120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13850455 (or 13850451 counting only the distinct ones).

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

Adding to 2011111120120 its reverse (210211111102), we get a palindrome (2221322231222).

It can be divided in two parts, 201111 and 1120120, that added together give a palindrome (1321231).

The spelling of 2011111120120 in words is "two trillion, eleven billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty".