2120120011111 has 4 divisors (see below), whose sum is σ = 2126411168752. Its totient is φ = 2113828853472.

The previous prime is 2120120011109. The next prime is 2120120011153. The reversal of 2120120011111 is 1111100210212.

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 2120120011111 - 2¹ = 2120120011109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120120011091 and 2120120011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120120018111) 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, 3145578315 + ... + 3145578988.

It is an arithmetic number, because the mean of its divisors is an integer number (531602792188).

Almost surely, 2^{2120120011111} is an apocalyptic number.

2120120011111 is a deficient number, since it is larger than the sum of its proper divisors (6291157641).

2120120011111 is an equidigital number, since it uses as much as digits as its factorization.

2120120011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291157640.

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

Adding to 2120120011111 its reverse (1111100210212), we get a palindrome (3231220221323).

The spelling of 2120120011111 in words is "two trillion, one hundred twenty billion, one hundred twenty million, eleven thousand, one hundred eleven".