121321223223104 has 112 divisors (see below), whose sum is σ = 243988127728128. Its totient is φ = 59847904985088.

The previous prime is 121321223223103. The next prime is 121321223223119. The reversal of 121321223223104 is 401322322123121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321223223103) 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, 11147768447 + ... + 11147779329.

It is an arithmetic number, because the mean of its divisors is an integer number (2178465426144).

Almost surely, 2^{121321223223104} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121321223223104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121994063864064).

121321223223104 is an abundant number, since it is smaller than the sum of its proper divisors (122666904505024).

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

121321223223104 is a wasteful number, since it uses less digits than its factorization.

121321223223104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16432 (or 16422 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 121321223223104 its reverse (401322322123121), we get a palindrome (522643545346225).

The spelling of 121321223223104 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, two hundred twenty-three thousand, one hundred four".