122131210123 has 16 divisors (see below), whose sum is σ = 135089589600. Its totient is φ = 109696446720.

The previous prime is 122131210109. The next prime is 122131210181. The reversal of 122131210123 is 321012131221.

It is a cyclic number.

It is not a de Polignac number, because 122131210123 - 2¹³ = 122131201931 is a prime.

It is a super-2 number, since 2×122131210123² (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 122131210123.

It is not an unprimeable number, because it can be changed into a prime (122131210823) 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 15 ways as a sum of consecutive naturals, for example, 100288 + ... + 504301.

It is an arithmetic number, because the mean of its divisors is an integer number (8443099350).

Almost surely, 2^122131210123 is an apocalyptic number.

122131210123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

122131210123 is a deficient number, since it is larger than the sum of its proper divisors (12958379477).

122131210123 is a wasteful number, since it uses less digits than its factorization.

122131210123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605022.

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

Adding to 122131210123 its reverse (321012131221), we get a palindrome (443143341344).

The spelling of 122131210123 in words is "one hundred twenty-two billion, one hundred thirty-one million, two hundred ten thousand, one hundred twenty-three".