121268541366720 has 168 divisors, whose sum is σ = 455032640565360. Its totient is φ = 29398434263040.

The previous prime is 121268541366683. The next prime is 121268541366773. The reversal of 121268541366720 is 27663145862121.

121268541366720 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 6 + 8 + 541 + 36 + 67 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1913928885 + ... + 1913992244.

Almost surely, 2^{121268541366720} is an apocalyptic number.

121268541366720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121268541366720 is an abundant number, since it is smaller than the sum of its proper divisors (333764099198640).

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

121268541366720 is a wasteful number, since it uses less digits than its factorization.

121268541366720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827921163 (or 3827921150 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 121268541366720 in words is "one hundred twenty-one trillion, two hundred sixty-eight billion, five hundred forty-one million, three hundred sixty-six thousand, seven hundred twenty".