2221231123231 has 16 divisors (see below), whose sum is σ = 2275233491808. Its totient is φ = 2167811712000.

The previous prime is 2221231123217. The next prime is 2221231123247. The reversal of 2221231123231 is 1323211321222.

It is a cyclic number.

It is not a de Polignac number, because 2221231123231 - 2³¹ = 2219083639583 is a prime.

It is a super-3 number, since 3×2221231123231³ (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 junction number, because it is equal to n+sod(n) for n = 2221231123196 and 2221231123205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221231123211) 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, 17343831 + ... + 17471431.

It is an arithmetic number, because the mean of its divisors is an integer number (142202093238).

Almost surely, 2^{2221231123231} is an apocalyptic number.

2221231123231 is a deficient number, since it is larger than the sum of its proper divisors (54002368577).

2221231123231 is a wasteful number, since it uses less digits than its factorization.

2221231123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129882.

The product of its digits is 1728, while the sum is 25.

Adding to 2221231123231 its reverse (1323211321222), we get a palindrome (3544442444453).

The spelling of 2221231123231 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred twenty-three thousand, two hundred thirty-one".