1202212012321 has 2 divisors, whose sum is σ = 1202212012322. Its totient is φ = 1202212012320.

The previous prime is 1202212012291. The next prime is 1202212012343. The reversal of 1202212012321 is 1232102122021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1108884817296 + 93327195025 = 1053036^2 + 305495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202212012321 - 2¹³ = 1202212004129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202212012921) 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 as a sum of consecutive naturals, namely, 601106006160 + 601106006161.

It is an arithmetic number, because the mean of its divisors is an integer number (601106006161).

Almost surely, 2^{1202212012321} is an apocalyptic number.

It is an amenable number.

1202212012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202212012321 is an equidigital number, since it uses as much as digits as its factorization.

1202212012321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1202212012321 its reverse (1232102122021), we get a palindrome (2434314134342).

The spelling of 1202212012321 in words is "one trillion, two hundred two billion, two hundred twelve million, twelve thousand, three hundred twenty-one".