1322131123221 has 24 divisors (see below), whose sum is σ = 1876909767552. Its totient is φ = 824988153600.

The previous prime is 1322131123213. The next prime is 1322131123253. The reversal of 1322131123221 is 1223211312231.

It is not a de Polignac number, because 1322131123221 - 2³ = 1322131123213 is a prime.

It is a super-3 number, since 3×1322131123221³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1322131123191 and 1322131123200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322131123321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1275156 + ... + 2066466.

It is an arithmetic number, because the mean of its divisors is an integer number (78204573648).

Almost surely, 2^{1322131123221} is an apocalyptic number.

It is an amenable number.

1322131123221 is a deficient number, since it is larger than the sum of its proper divisors (554778644331).

1322131123221 is an equidigital number, since it uses as much as digits as its factorization.

1322131123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791693 (or 791512 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 1322131123221 its reverse (1223211312231), we get a palindrome (2545342435452).

The spelling of 1322131123221 in words is "one trillion, three hundred twenty-two billion, one hundred thirty-one million, one hundred twenty-three thousand, two hundred twenty-one".