121103044040 has 256 divisors, whose sum is σ = 308774073600. Its totient is φ = 42375168000.

The previous prime is 121103044033. The next prime is 121103044061. The reversal of 121103044040 is 40440301121.

121103044040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 264995492 + ... + 264995948.

It is an arithmetic number, because the mean of its divisors is an integer number (1206148725).

Almost surely, 2^121103044040 is an apocalyptic number.

121103044040 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 121103044040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154387036800).

121103044040 is an abundant number, since it is smaller than the sum of its proper divisors (187671029560).

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

121103044040 is a wasteful number, since it uses less digits than its factorization.

121103044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121103044040 its reverse (40440301121), we get a palindrome (161543345161).

The spelling of 121103044040 in words is "one hundred twenty-one billion, one hundred three million, forty-four thousand, forty".