2123123333 has 2 divisors, whose sum is σ = 2123123334. Its totient is φ = 2123123332.

The previous prime is 2123123329. The next prime is 2123123357. The reversal of 2123123333 is 3333213212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1300179364 + 822943969 = 36058^2 + 28687^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123123333 - 2² = 2123123329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123123299 and 2123123308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123123363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061561666 + 1061561667.

It is an arithmetic number, because the mean of its divisors is an integer number (1061561667).

Almost surely, 2^2123123333 is an apocalyptic number.

It is an amenable number.

2123123333 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123123333 is an equidigital number, since it uses as much as digits as its factorization.

2123123333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 23.

The square root of 2123123333 is about 46077.3624787704. The cubic root of 2123123333 is about 1285.2622180338.

Adding to 2123123333 its reverse (3333213212), we get a palindrome (5456336545).

The spelling of 2123123333 in words is "two billion, one hundred twenty-three million, one hundred twenty-three thousand, three hundred thirty-three".