1322302121221 has 6 divisors (see below), whose sum is σ = 1322790190610. Its totient is φ = 1321814231808.

The previous prime is 1322302121197. The next prime is 1322302121227. The reversal of 1322302121221 is 1221212032231.

It can be written as a sum of positive squares in 3 ways, for example, as 817648169121 + 504653952100 = 904239^2 + 710390^2 .

It is not a de Polignac number, because 1322302121221 - 2¹⁵ = 1322302088453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322302121192 and 1322302121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322302121227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7491775 + ... + 7666243.

Almost surely, 2^{1322302121221} is an apocalyptic number.

It is an amenable number.

1322302121221 is a deficient number, since it is larger than the sum of its proper divisors (488069389).

1322302121221 is an frugal number, since it uses more digits than its factorization.

1322302121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179975 (or 177222 counting only the distinct ones).

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

Adding to 1322302121221 its reverse (1221212032231), we get a palindrome (2543514153452).

The spelling of 1322302121221 in words is "one trillion, three hundred twenty-two billion, three hundred two million, one hundred twenty-one thousand, two hundred twenty-one".