121333235140 has 192 divisors, whose sum is σ = 287586754560. Its totient is φ = 42692106240.

The previous prime is 121333235131. The next prime is 121333235141. The reversal of 121333235140 is 41532333121.

It is a junction number, because it is equal to n+sod(n) for n = 121333235099 and 121333235108.

It is not an unprimeable number, because it can be changed into a prime (121333235141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 249143977 + ... + 249144463.

It is an arithmetic number, because the mean of its divisors is an integer number (1497847680).

Almost surely, 2^121333235140 is an apocalyptic number.

121333235140 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 121333235140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143793377280).

121333235140 is an abundant number, since it is smaller than the sum of its proper divisors (166253519420).

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

121333235140 is a wasteful number, since it uses less digits than its factorization.

121333235140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 121333235140 its reverse (41532333121), we get a palindrome (162865568261).

The spelling of 121333235140 in words is "one hundred twenty-one billion, three hundred thirty-three million, two hundred thirty-five thousand, one hundred forty".