2111321333111 has 4 divisors (see below), whose sum is σ = 2162816975424. Its totient is φ = 2059825690800.

The previous prime is 2111321333059. The next prime is 2111321333137. The reversal of 2111321333111 is 1113331231112.

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 2111321333111 - 2²² = 2111317138807 is a prime.

It is a super-2 number, since 2×2111321333111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111321333411) 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, 25747821095 + ... + 25747821176.

It is an arithmetic number, because the mean of its divisors is an integer number (540704243856).

Almost surely, 2^{2111321333111} is an apocalyptic number.

2111321333111 is a deficient number, since it is larger than the sum of its proper divisors (51495642313).

2111321333111 is an equidigital number, since it uses as much as digits as its factorization.

2111321333111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51495642312.

The product of its digits is 324, while the sum is 23.

Adding to 2111321333111 its reverse (1113331231112), we get a palindrome (3224652564223).

The spelling of 2111321333111 in words is "two trillion, one hundred eleven billion, three hundred twenty-one million, three hundred thirty-three thousand, one hundred eleven".