123133211 has 2 divisors, whose sum is σ = 123133212. Its totient is φ = 123133210.

The previous prime is 123133207. The next prime is 123133249. The reversal of 123133211 is 112331321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123133211 - 2² = 123133207 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123133211.

It is not a weakly prime, because it can be changed into another prime (123133201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61566605 + 61566606.

It is an arithmetic number, because the mean of its divisors is an integer number (61566606).

Almost surely, 2^123133211 is an apocalyptic number.

123133211 is a deficient number, since it is larger than the sum of its proper divisors (1).

123133211 is an equidigital number, since it uses as much as digits as its factorization.

123133211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 123133211 is about 11096.5404969297. The cubic root of 123133211 is about 497.4984534013.

Adding to 123133211 its reverse (112331321), we get a palindrome (235464532).

The spelling of 123133211 in words is "one hundred twenty-three million, one hundred thirty-three thousand, two hundred eleven".