123021310211 has 2 divisors, whose sum is σ = 123021310212. Its totient is φ = 123021310210.

The previous prime is 123021310187. The next prime is 123021310213. The reversal of 123021310211 is 112013120321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123021310211 - 2¹⁴ = 123021293827 is a prime.

Together with 123021310213, it forms a pair of twin primes.

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 123021310211.

It is not a weakly prime, because it can be changed into another prime (123021310213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510655105 + 61510655106.

It is an arithmetic number, because the mean of its divisors is an integer number (61510655106).

Almost surely, 2^123021310211 is an apocalyptic number.

123021310211 is a deficient number, since it is larger than the sum of its proper divisors (1).

123021310211 is an equidigital number, since it uses as much as digits as its factorization.

123021310211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123021310211 its reverse (112013120321), we get a palindrome (235034430532).

The spelling of 123021310211 in words is "one hundred twenty-three billion, twenty-one million, three hundred ten thousand, two hundred eleven".