2231232221321 has 16 divisors (see below), whose sum is σ = 2342239578000. Its totient is φ = 2123394324480.

The previous prime is 2231232221303. The next prime is 2231232221347. The reversal of 2231232221321 is 1231222321322.

It can be written as a sum of positive squares in 8 ways, for example, as 65004601600 + 2166227619721 = 254960^2 + 1471811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231232221321 - 2¹⁰ = 2231232220297 is a prime.

It is a super-3 number, since 3×2231232221321³ (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 not an unprimeable number, because it can be changed into a prime (2231232224321) 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, 2591696 + ... + 3343553.

It is an arithmetic number, because the mean of its divisors is an integer number (146389973625).

Almost surely, 2^{2231232221321} is an apocalyptic number.

It is an amenable number.

2231232221321 is a deficient number, since it is larger than the sum of its proper divisors (111007356679).

2231232221321 is a wasteful number, since it uses less digits than its factorization.

2231232221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935516.

The product of its digits is 3456, while the sum is 26.

Adding to 2231232221321 its reverse (1231222321322), we get a palindrome (3462454542643).

The spelling of 2231232221321 in words is "two trillion, two hundred thirty-one billion, two hundred thirty-two million, two hundred twenty-one thousand, three hundred twenty-one".