123201122311 has 16 divisors (see below), whose sum is σ = 126351537984. Its totient is φ = 120093732864.

The previous prime is 123201122221. The next prime is 123201122321. The reversal of 123201122311 is 113221102321.

It is a cyclic number.

It is not a de Polignac number, because 123201122311 - 2¹⁷ = 123200991239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123201122321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5249475 + ... + 5272891.

It is an arithmetic number, because the mean of its divisors is an integer number (7896971124).

Almost surely, 2^123201122311 is an apocalyptic number.

123201122311 is a deficient number, since it is larger than the sum of its proper divisors (3150415673).

123201122311 is an equidigital number, since it uses as much as digits as its factorization.

123201122311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24330.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123201122311 its reverse (113221102321), we get a palindrome (236422224632).

The spelling of 123201122311 in words is "one hundred twenty-three billion, two hundred one million, one hundred twenty-two thousand, three hundred eleven".