2121355333 has 2 divisors, whose sum is σ = 2121355334. Its totient is φ = 2121355332.

The previous prime is 2121355331. The next prime is 2121355367. The reversal of 2121355333 is 3335531212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1617487524 + 503867809 = 40218^2 + 22447^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121355333 - 2¹ = 2121355331 is a prime.

Together with 2121355331, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121355331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060677666 + 1060677667.

It is an arithmetic number, because the mean of its divisors is an integer number (1060677667).

Almost surely, 2^2121355333 is an apocalyptic number.

It is an amenable number.

2121355333 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121355333 is an equidigital number, since it uses as much as digits as its factorization.

2121355333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 28.

The square root of 2121355333 is about 46058.1733571795. The cubic root of 2121355333 is about 1284.9053578346.

Adding to 2121355333 its reverse (3335531212), we get a palindrome (5456886545).

The spelling of 2121355333 in words is "two billion, one hundred twenty-one million, three hundred fifty-five thousand, three hundred thirty-three".