2111011213331 has 4 divisors (see below), whose sum is σ = 2120477631552. Its totient is φ = 2101544795112.

The previous prime is 2111011213291. The next prime is 2111011213351. The reversal of 2111011213331 is 1333121101112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111011213331 is a prime.

It is a super-2 number, since 2×2111011213331² (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 (2111011213351) 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, 4733208776 + ... + 4733209221.

It is an arithmetic number, because the mean of its divisors is an integer number (530119407888).

Almost surely, 2^{2111011213331} is an apocalyptic number.

2111011213331 is a deficient number, since it is larger than the sum of its proper divisors (9466418221).

2111011213331 is an equidigital number, since it uses as much as digits as its factorization.

2111011213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466418220.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 2111011213331 its reverse (1333121101112), we get a palindrome (3444132314443).

The spelling of 2111011213331 in words is "two trillion, one hundred eleven billion, eleven million, two hundred thirteen thousand, three hundred thirty-one".