123122121223 has 16 divisors (see below), whose sum is σ = 137404486080. Its totient is φ = 109772755456.

The previous prime is 123122121209. The next prime is 123122121259. The reversal of 123122121223 is 322121221321.

It is a cyclic number.

It is not a de Polignac number, because 123122121223 - 2⁵ = 123122121191 is a prime.

It is a super-2 number, since 2×123122121223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123122121194 and 123122121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123122821223) 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, 2329915 + ... + 2382172.

It is an arithmetic number, because the mean of its divisors is an integer number (8587780380).

Almost surely, 2^123122121223 is an apocalyptic number.

123122121223 is a deficient number, since it is larger than the sum of its proper divisors (14282364857).

123122121223 is a wasteful number, since it uses less digits than its factorization.

123122121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712186.

The product of its digits is 576, while the sum is 22.

Adding to 123122121223 its reverse (322121221321), we get a palindrome (445243342544).

The spelling of 123122121223 in words is "one hundred twenty-three billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-three".