123211401123 has 4 divisors (see below), whose sum is σ = 164281868168. Its totient is φ = 82140934080.

The previous prime is 123211401091. The next prime is 123211401127. The reversal of 123211401123 is 321104112321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123211401123 - 2⁵ = 123211401091 is a prime.

It is a super-2 number, since 2×123211401123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123211401123.

It is not an unprimeable number, because it can be changed into a prime (123211401127) 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 in 3 ways as a sum of consecutive naturals, for example, 20535233518 + ... + 20535233523.

It is an arithmetic number, because the mean of its divisors is an integer number (41070467042).

Almost surely, 2^123211401123 is an apocalyptic number.

123211401123 is a deficient number, since it is larger than the sum of its proper divisors (41070467045).

123211401123 is an equidigital number, since it uses as much as digits as its factorization.

123211401123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41070467044.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 123211401123 its reverse (321104112321), we get a palindrome (444315513444).

The spelling of 123211401123 in words is "one hundred twenty-three billion, two hundred eleven million, four hundred one thousand, one hundred twenty-three".