121313232321123 has 16 divisors (see below), whose sum is σ = 166131127774976. Its totient is φ = 78685636312800.

The previous prime is 121313232321079. The next prime is 121313232321161. The reversal of 121313232321123 is 321123232313121.

It is a happy number.

It is not a de Polignac number, because 121313232321123 - 2⁶ = 121313232321059 is a prime.

It is a super-2 number, since 2×121313232321123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121313232321163) 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, 25792453 + ... + 30130998.

It is an arithmetic number, because the mean of its divisors is an integer number (10383195485936).

Almost surely, 2^{121313232321123} is an apocalyptic number.

121313232321123 is a deficient number, since it is larger than the sum of its proper divisors (44817895453853).

121313232321123 is a wasteful number, since it uses less digits than its factorization.

121313232321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55943034.

The product of its digits is 7776, while the sum is 30.

Adding to 121313232321123 its reverse (321123232313121), we get a palindrome (442436464634244).

The spelling of 121313232321123 in words is "one hundred twenty-one trillion, three hundred thirteen billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred twenty-three".