121033400404 has 72 divisors (see below), whose sum is σ = 251941802112. Its totient is φ = 50705262720.

The previous prime is 121033400401. The next prime is 121033400417. The reversal of 121033400404 is 404004330121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121033400401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7887019 + ... + 7902349.

It is an arithmetic number, because the mean of its divisors is an integer number (3499191696).

Almost surely, 2^121033400404 is an apocalyptic number.

121033400404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121033400404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125970901056).

121033400404 is an abundant number, since it is smaller than the sum of its proper divisors (130908401708).

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

121033400404 is a wasteful number, since it uses less digits than its factorization.

121033400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16253 (or 16244 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 121033400404 its reverse (404004330121), we get a palindrome (525037730525).

The spelling of 121033400404 in words is "one hundred twenty-one billion, thirty-three million, four hundred thousand, four hundred four".