2012120111011 has 4 divisors (see below), whose sum is σ = 2016922307400. Its totient is φ = 2007317914624.

The previous prime is 2012120111009. The next prime is 2012120111033. The reversal of 2012120111011 is 1101110212102.

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 2012120111011 - 2¹ = 2012120111009 is a prime.

It is a super-2 number, since 2×2012120111011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012120110982 and 2012120111000.

It is not an unprimeable number, because it can be changed into a prime (2012120111081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2401097566 + ... + 2401098403.

It is an arithmetic number, because the mean of its divisors is an integer number (504230576850).

Almost surely, 2^{2012120111011} is an apocalyptic number.

2012120111011 is a deficient number, since it is larger than the sum of its proper divisors (4802196389).

2012120111011 is an equidigital number, since it uses as much as digits as its factorization.

2012120111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4802196388.

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

Adding to 2012120111011 its reverse (1101110212102), we get a palindrome (3113230323113).

The spelling of 2012120111011 in words is "two trillion, twelve billion, one hundred twenty million, one hundred eleven thousand, eleven".