121255113330 has 192 divisors, whose sum is σ = 360860048640. Its totient is φ = 28001438208.

The previous prime is 121255113313. The next prime is 121255113361. The reversal of 121255113330 is 33311552121.

121255113330 is a `hidden beast` number, since 1 + 212 + 5 + 5 + 113 + 330 = 666.

It is a super-2 number, since 2×121255113330² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121255113294 and 121255113303.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2263212 + ... + 2316168.

It is an arithmetic number, because the mean of its divisors is an integer number (1879479420).

Almost surely, 2^121255113330 is an apocalyptic number.

121255113330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121255113330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180430024320).

121255113330 is an abundant number, since it is smaller than the sum of its proper divisors (239604935310).

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

121255113330 is a wasteful number, since it uses less digits than its factorization.

121255113330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53105 (or 53102 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 121255113330 its reverse (33311552121), we get a palindrome (154566665451).

The spelling of 121255113330 in words is "one hundred twenty-one billion, two hundred fifty-five million, one hundred thirteen thousand, three hundred thirty".