121043000000 has 196 divisors, whose sum is σ = 323369610816. Its totient is φ = 44688000000.

The previous prime is 121042999991. The next prime is 121043000069. The reversal of 121043000000 is 340121.

It is a happy number.

121043000000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 12995345 + ... + 13004655.

Almost surely, 2^121043000000 is an apocalyptic number.

121043000000 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 121043000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161684805408).

121043000000 is an abundant number, since it is smaller than the sum of its proper divisors (202326610816).

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

121043000000 is an frugal number, since it uses more digits than its factorization.

121043000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9366 (or 9331 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 121043000000 its reverse (340121), we get a palindrome (121043340121).

The spelling of 121043000000 in words is "one hundred twenty-one billion, forty-three million", and thus it is an aban number.