1322121321121 has 4 divisors (see below), whose sum is σ = 1322148658500. Its totient is φ = 1322093983744.

The previous prime is 1322121321061. The next prime is 1322121321163. The reversal of 1322121321121 is 1211231212231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 666084499600 + 656036821521 = 816140^2 + 809961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322121321121 - 2¹¹ = 1322121319073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322121321092 and 1322121321101.

It is not an unprimeable number, because it can be changed into a prime (1322121301121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13596016 + ... + 13692913.

It is an arithmetic number, because the mean of its divisors is an integer number (330537164625).

Almost surely, 2^{1322121321121} is an apocalyptic number.

It is an amenable number.

1322121321121 is a deficient number, since it is larger than the sum of its proper divisors (27337379).

1322121321121 is an equidigital number, since it uses as much as digits as its factorization.

1322121321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27337378.

The product of its digits is 288, while the sum is 22.

Adding to 1322121321121 its reverse (1211231212231), we get a palindrome (2533352533352).

The spelling of 1322121321121 in words is "one trillion, three hundred twenty-two billion, one hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-one".