2331231222111 has 16 divisors (see below), whose sum is σ = 3391311328128. Its totient is φ = 1412688428000.

The previous prime is 2331231222101. The next prime is 2331231222157. The reversal of 2331231222111 is 1112221321332.

It is a cyclic number.

It is not a de Polignac number, because 2331231222111 - 2¹³ = 2331231213919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331231222101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4209801 + ... + 4731266.

It is an arithmetic number, because the mean of its divisors is an integer number (211956958008).

Almost surely, 2^{2331231222111} is an apocalyptic number.

2331231222111 is a deficient number, since it is larger than the sum of its proper divisors (1060080106017).

2331231222111 is a wasteful number, since it uses less digits than its factorization.

2331231222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8948982.

The product of its digits is 864, while the sum is 24.

Adding to 2331231222111 its reverse (1112221321332), we get a palindrome (3443452543443).

The spelling of 2331231222111 in words is "two trillion, three hundred thirty-one billion, two hundred thirty-one million, two hundred twenty-two thousand, one hundred eleven".