123211303133 has 2 divisors, whose sum is σ = 123211303134. Its totient is φ = 123211303132.

The previous prime is 123211303129. The next prime is 123211303153. The reversal of 123211303133 is 331303112321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115614960484 + 7596342649 = 340022^2 + 87157^2 .

It is a cyclic number.

It is not a de Polignac number, because 123211303133 - 2² = 123211303129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123211303099 and 123211303108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123211303153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61605651566 + 61605651567.

It is an arithmetic number, because the mean of its divisors is an integer number (61605651567).

Almost surely, 2^123211303133 is an apocalyptic number.

It is an amenable number.

123211303133 is a deficient number, since it is larger than the sum of its proper divisors (1).

123211303133 is an equidigital number, since it uses as much as digits as its factorization.

123211303133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 123211303133 its reverse (331303112321), we get a palindrome (454514415454).

The spelling of 123211303133 in words is "one hundred twenty-three billion, two hundred eleven million, three hundred three thousand, one hundred thirty-three".