231121222321 has 16 divisors (see below), whose sum is σ = 271574519040. Its totient is φ = 194422651920.

The previous prime is 231121222259. The next prime is 231121222349. The reversal of 231121222321 is 123222121132.

It is a cyclic number.

It is not a de Polignac number, because 231121222321 - 2⁹ = 231121221809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231121222292 and 231121222301.

It is not an unprimeable number, because it can be changed into a prime (231121222421) 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, 12849655 + ... + 12867628.

It is an arithmetic number, because the mean of its divisors is an integer number (16973407440).

Almost surely, 2^231121222321 is an apocalyptic number.

It is an amenable number.

231121222321 is a deficient number, since it is larger than the sum of its proper divisors (40453296719).

231121222321 is a wasteful number, since it uses less digits than its factorization.

231121222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25717356.

The product of its digits is 576, while the sum is 22.

Adding to 231121222321 its reverse (123222121132), we get a palindrome (354343343453).

The spelling of 231121222321 in words is "two hundred thirty-one billion, one hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-one".