2120012111011 has 4 divisors (see below), whose sum is σ = 2125462014000. Its totient is φ = 2114562208024.

The previous prime is 2120012110927. The next prime is 2120012111017. The reversal of 2120012111011 is 1101112100212.

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 2120012111011 - 2³¹ = 2117864627363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120012110982 and 2120012111000.

It is not an unprimeable number, because it can be changed into a prime (2120012111017) 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, 2724950911 + ... + 2724951688.

It is an arithmetic number, because the mean of its divisors is an integer number (531365503500).

Almost surely, 2^{2120012111011} is an apocalyptic number.

2120012111011 is a deficient number, since it is larger than the sum of its proper divisors (5449902989).

2120012111011 is an equidigital number, since it uses as much as digits as its factorization.

2120012111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449902988.

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

Adding to 2120012111011 its reverse (1101112100212), we get a palindrome (3221124211223).

The spelling of 2120012111011 in words is "two trillion, one hundred twenty billion, twelve million, one hundred eleven thousand, eleven".