321232021122121 has 2 divisors, whose sum is σ = 321232021122122. Its totient is φ = 321232021122120.

The previous prime is 321232021122113. The next prime is 321232021122137. The reversal of 321232021122121 is 121221120232123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262826966139721 + 58405054982400 = 16211939^2 + 7642320^2 .

It is a cyclic number.

It is not a de Polignac number, because 321232021122121 - 2³ = 321232021122113 is a prime.

It is a super-2 number, since 2×321232021122121² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321232001122121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160616010561060 + 160616010561061.

It is an arithmetic number, because the mean of its divisors is an integer number (160616010561061).

Almost surely, 2^{321232021122121} is an apocalyptic number.

It is an amenable number.

321232021122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

321232021122121 is an equidigital number, since it uses as much as digits as its factorization.

321232021122121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 321232021122121 its reverse (121221120232123), we get a palindrome (442453141354244).

The spelling of 321232021122121 in words is "three hundred twenty-one trillion, two hundred thirty-two billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".