121220213123333 has 2 divisors, whose sum is σ = 121220213123334. Its totient is φ = 121220213123332.

The previous prime is 121220213123279. The next prime is 121220213123353. The reversal of 121220213123333 is 333321312022121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114205941611524 + 7014271511809 = 10686718^2 + 2648447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220213123333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121220213123296 and 121220213123305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220213123353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610106561666 + 60610106561667.

It is an arithmetic number, because the mean of its divisors is an integer number (60610106561667).

Almost surely, 2^{121220213123333} is an apocalyptic number.

It is an amenable number.

121220213123333 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220213123333 is an equidigital number, since it uses as much as digits as its factorization.

121220213123333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 121220213123333 its reverse (333321312022121), we get a palindrome (454541525145454).

The spelling of 121220213123333 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred thirteen million, one hundred twenty-three thousand, three hundred thirty-three".