2112231311 has 4 divisors (see below), whose sum is σ = 2223401400. Its totient is φ = 2001061224.

The previous prime is 2112231263. The next prime is 2112231367. The reversal of 2112231311 is 1131322112.

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 2112231311 - 2²⁶ = 2045122447 is a prime.

It is a super-2 number, since 2×2112231311² = 8923042222337557442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112231311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112231391) 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, 55585016 + ... + 55585053.

It is an arithmetic number, because the mean of its divisors is an integer number (555850350).

Almost surely, 2^2112231311 is an apocalyptic number.

2112231311 is a deficient number, since it is larger than the sum of its proper divisors (111170089).

2112231311 is a wasteful number, since it uses less digits than its factorization.

2112231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111170088.

The product of its digits is 72, while the sum is 17.

The square root of 2112231311 is about 45959.0177331936. The cubic root of 2112231311 is about 1283.0605698070.

Adding to 2112231311 its reverse (1131322112), we get a palindrome (3243553423).

The spelling of 2112231311 in words is "two billion, one hundred twelve million, two hundred thirty-one thousand, three hundred eleven".