123200101111123 has 16 divisors (see below), whose sum is σ = 123430699465216. Its totient is φ = 122969768315040.

The previous prime is 123200101111103. The next prime is 123200101111151. The reversal of 123200101111123 is 321111101002321.

It is a cyclic number.

It is not a de Polignac number, because 123200101111123 - 2¹³ = 123200101102931 is a prime.

It is a super-2 number, since 2×123200101111123² (a number of 29 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 123200101111123.

It is not an unprimeable number, because it can be changed into a prime (123200101111103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7507157788 + ... + 7507174198.

It is an arithmetic number, because the mean of its divisors is an integer number (7714418716576).

Almost surely, 2^{123200101111123} is an apocalyptic number.

123200101111123 is a deficient number, since it is larger than the sum of its proper divisors (230598354093).

123200101111123 is a wasteful number, since it uses less digits than its factorization.

123200101111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23674.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 123200101111123 its reverse (321111101002321), we get a palindrome (444311202113444).

The spelling of 123200101111123 in words is "one hundred twenty-three trillion, two hundred billion, one hundred one million, one hundred eleven thousand, one hundred twenty-three".