2331111144121 has 4 divisors (see below), whose sum is σ = 2342944195812. Its totient is φ = 2319278092432.

The previous prime is 2331111144119. The next prime is 2331111144137. The reversal of 2331111144121 is 1214411111332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1385354894121 + 945756250000 = 1177011^2 + 972500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331111144121 - 2¹ = 2331111144119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2331111144191) 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, 5916525550 + ... + 5916525943.

It is an arithmetic number, because the mean of its divisors is an integer number (585736048953).

Almost surely, 2^{2331111144121} is an apocalyptic number.

It is an amenable number.

2331111144121 is a deficient number, since it is larger than the sum of its proper divisors (11833051691).

2331111144121 is a wasteful number, since it uses less digits than its factorization.

2331111144121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11833051690.

The product of its digits is 576, while the sum is 25.

Adding to 2331111144121 its reverse (1214411111332), we get a palindrome (3545522255453).

The spelling of 2331111144121 in words is "two trillion, three hundred thirty-one billion, one hundred eleven million, one hundred forty-four thousand, one hundred twenty-one".