2231112313121 has 16 divisors (see below), whose sum is σ = 2327481138240. Its totient is φ = 2136095008320.

The previous prime is 2231112313043. The next prime is 2231112313127. The reversal of 2231112313121 is 1213132111322.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2231112313121 - 2¹⁰ = 2231112312097 is a prime.

It is a super-3 number, since 3×2231112313121³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231112313127) 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, 1736510 + ... + 2734536.

It is an arithmetic number, because the mean of its divisors is an integer number (145467571140).

Almost surely, 2^{2231112313121} is an apocalyptic number.

It is an amenable number.

2231112313121 is a deficient number, since it is larger than the sum of its proper divisors (96368825119).

2231112313121 is a wasteful number, since it uses less digits than its factorization.

2231112313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998704.

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

Adding to 2231112313121 its reverse (1213132111322), we get a palindrome (3444244424443).

The spelling of 2231112313121 in words is "two trillion, two hundred thirty-one billion, one hundred twelve million, three hundred thirteen thousand, one hundred twenty-one".