121335054120 has 384 divisors, whose sum is σ = 475106860800. Its totient is φ = 26234523648.

The previous prime is 121335054103. The next prime is 121335054121. The reversal of 121335054120 is 21450533121.

121335054120 is a `hidden beast` number, since 1 + 2 + 1 + 33 + 505 + 4 + 120 = 666.

It is not an unprimeable number, because it can be changed into a prime (121335054121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 41031682 + ... + 41034638.

It is an arithmetic number, because the mean of its divisors is an integer number (1237257450).

Almost surely, 2^121335054120 is an apocalyptic number.

121335054120 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 121335054120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237553430400).

121335054120 is an abundant number, since it is smaller than the sum of its proper divisors (353771806680).

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

121335054120 is a wasteful number, since it uses less digits than its factorization.

121335054120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857 (or 3850 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 121335054120 its reverse (21450533121), we get a palindrome (142785587241).

The spelling of 121335054120 in words is "one hundred twenty-one billion, three hundred thirty-five million, fifty-four thousand, one hundred twenty".