121550255603712 has 360 divisors, whose sum is σ = 392150340678096. Its totient is φ = 37400062722048.

The previous prime is 121550255603633. The next prime is 121550255603719. The reversal of 121550255603712 is 217306552055121.

121550255603712 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 5 + 0 + 25 + 5 + 603 + 7 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (121550255603719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50582818 + ... + 52931294.

Almost surely, 2^{121550255603712} is an apocalyptic number.

121550255603712 is a gapful number since it is divisible by the number (12) 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 121550255603712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196075170339048).

121550255603712 is an abundant number, since it is smaller than the sum of its proper divisors (270600085074384).

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

121550255603712 is an frugal number, since it uses more digits than its factorization.

121550255603712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348533 (or 2348495 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 45.

The spelling of 121550255603712 in words is "one hundred twenty-one trillion, five hundred fifty billion, two hundred fifty-five million, six hundred three thousand, seven hundred twelve".