2111120120011 has 4 divisors (see below), whose sum is σ = 2412708708592. Its totient is φ = 1809531531432.

The previous prime is 2111120119951. The next prime is 2111120120089. The reversal of 2111120120011 is 1100210211112.

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 2111120120011 - 2²¹ = 2111118022859 is a prime.

It is a super-2 number, since 2×2111120120011² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111120119973 and 2111120120000.

It is not an unprimeable number, because it can be changed into a prime (2111120120311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150794294280 + ... + 150794294293.

It is an arithmetic number, because the mean of its divisors is an integer number (603177177148).

Almost surely, 2^{2111120120011} is an apocalyptic number.

2111120120011 is a deficient number, since it is larger than the sum of its proper divisors (301588588581).

2111120120011 is an equidigital number, since it uses as much as digits as its factorization.

2111120120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301588588580.

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

Adding to 2111120120011 its reverse (1100210211112), we get a palindrome (3211330331123).

The spelling of 2111120120011 in words is "two trillion, one hundred eleven billion, one hundred twenty million, one hundred twenty thousand, eleven".