2231123312111 has 16 divisors (see below), whose sum is σ = 2253936115200. Its totient is φ = 2208442680288.

The previous prime is 2231123312059. The next prime is 2231123312129. The reversal of 2231123312111 is 1112133211322.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2231123312111 - 2²² = 2231119117807 is a prime.

It is a super-3 number, since 3×2231123312111³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231123311111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38313605 + ... + 38371793.

It is an arithmetic number, because the mean of its divisors is an integer number (140871007200).

Almost surely, 2^{2231123312111} is an apocalyptic number.

2231123312111 is a deficient number, since it is larger than the sum of its proper divisors (22812803089).

2231123312111 is a wasteful number, since it uses less digits than its factorization.

2231123312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59318.

The product of its digits is 432, while the sum is 23.

Adding to 2231123312111 its reverse (1112133211322), we get a palindrome (3343256523433).

The spelling of 2231123312111 in words is "two trillion, two hundred thirty-one billion, one hundred twenty-three million, three hundred twelve thousand, one hundred eleven".