121404321204 has 96 divisors (see below), whose sum is σ = 311327815680. Its totient is φ = 36650452608.

The previous prime is 121404321193. The next prime is 121404321209. The reversal of 121404321204 is 402123404121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121404321209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10938682 + ... + 10949774.

It is an arithmetic number, because the mean of its divisors is an integer number (3242998080).

Almost surely, 2^121404321204 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 121404321204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155663907840).

121404321204 is an abundant number, since it is smaller than the sum of its proper divisors (189923494476).

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

121404321204 is a wasteful number, since it uses less digits than its factorization.

121404321204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13229 (or 13227 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 121404321204 its reverse (402123404121), we get a palindrome (523527725325).

The spelling of 121404321204 in words is "one hundred twenty-one billion, four hundred four million, three hundred twenty-one thousand, two hundred four".