121443304020 has 96 divisors (see below), whose sum is σ = 349590291456. Its totient is φ = 31477248000.

The previous prime is 121443303991. The next prime is 121443304043. The reversal of 121443304020 is 20403344121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2172420 + ... + 2227620.

It is an arithmetic number, because the mean of its divisors is an integer number (3641565536).

Almost surely, 2^121443304020 is an apocalyptic number.

121443304020 is a gapful number since it is divisible by the number (10) 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 121443304020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174795145728).

121443304020 is an abundant number, since it is smaller than the sum of its proper divisors (228146987436).

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

121443304020 is a wasteful number, since it uses less digits than its factorization.

121443304020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56241 (or 56239 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 121443304020 its reverse (20403344121), we get a palindrome (141846648141).

The spelling of 121443304020 in words is "one hundred twenty-one billion, four hundred forty-three million, three hundred four thousand, twenty".