2011120211123 has 4 divisors (see below), whose sum is σ = 2041136930760. Its totient is φ = 1981103491488.

The previous prime is 2011120211083. The next prime is 2011120211161. The reversal of 2011120211123 is 3211120211102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011120211123 - 2⁸ = 2011120210867 is a prime.

It is a super-2 number, since 2×2011120211123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011120211183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15008359718 + ... + 15008359851.

It is an arithmetic number, because the mean of its divisors is an integer number (510284232690).

Almost surely, 2^{2011120211123} is an apocalyptic number.

2011120211123 is a deficient number, since it is larger than the sum of its proper divisors (30016719637).

2011120211123 is an equidigital number, since it uses as much as digits as its factorization.

2011120211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30016719636.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2011120211123 its reverse (3211120211102), we get a palindrome (5222240422225).

The spelling of 2011120211123 in words is "two trillion, eleven billion, one hundred twenty million, two hundred eleven thousand, one hundred twenty-three".