1322312123221 has 8 divisors (see below), whose sum is σ = 1330816851000. Its totient is φ = 1313820573120.

The previous prime is 1322312123177. The next prime is 1322312123269. The reversal of 1322312123221 is 1223212132231.

It can be written as a sum of positive squares in 4 ways, for example, as 13084156996 + 1309227966225 = 114386^2 + 1144215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1322312123221 - 2¹¹ = 1322312121173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322312123021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3093046 + ... + 3494503.

It is an arithmetic number, because the mean of its divisors is an integer number (166352106375).

Almost surely, 2^{1322312123221} is an apocalyptic number.

It is an amenable number.

1322312123221 is a deficient number, since it is larger than the sum of its proper divisors (8504727779).

1322312123221 is a wasteful number, since it uses less digits than its factorization.

1322312123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6588839.

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

Adding to 1322312123221 its reverse (1223212132231), we get a palindrome (2545524255452).

The spelling of 1322312123221 in words is "one trillion, three hundred twenty-two billion, three hundred twelve million, one hundred twenty-three thousand, two hundred twenty-one".