123311013211 has 2 divisors, whose sum is σ = 123311013212. Its totient is φ = 123311013210.

The previous prime is 123311013197. The next prime is 123311013247. The reversal of 123311013211 is 112310113321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123311013211 - 2⁷ = 123311013083 is a prime.

It is not a weakly prime, because it can be changed into another prime (123311013311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61655506605 + 61655506606.

It is an arithmetic number, because the mean of its divisors is an integer number (61655506606).

Almost surely, 2^123311013211 is an apocalyptic number.

123311013211 is a deficient number, since it is larger than the sum of its proper divisors (1).

123311013211 is an equidigital number, since it uses as much as digits as its factorization.

123311013211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 123311013211 its reverse (112310113321), we get a palindrome (235621126532).

The spelling of 123311013211 in words is "one hundred twenty-three billion, three hundred eleven million, thirteen thousand, two hundred eleven".