123121321001232 has 40 divisors (see below), whose sum is σ = 318064803028896. Its totient is φ = 41040260921856.

The previous prime is 123121321001221. The next prime is 123121321001233. The reversal of 123121321001232 is 232100123121321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (123121321001233) 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 7 ways as a sum of consecutive naturals, for example, 5723803 + ... + 16703429.

Almost surely, 2^{123121321001232} is an apocalyptic number.

123121321001232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123121321001232 is an abundant number, since it is smaller than the sum of its proper divisors (194943482027664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123121321001232 is a wasteful number, since it uses less digits than its factorization.

123121321001232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11213255 (or 11213249 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 123121321001232 its reverse (232100123121321), we get a palindrome (355221444122553).

The spelling of 123121321001232 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, three hundred twenty-one million, one thousand, two hundred thirty-two".