121544361066272 has 192 divisors, whose sum is σ = 267473580724224. Its totient is φ = 54073183211520.

The previous prime is 121544361066253. The next prime is 121544361066307. The reversal of 121544361066272 is 272660163445121.

It is a self number, because there is not a number n which added to its sum of digits gives 121544361066272.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 576910583 + ... + 577121225.

It is an arithmetic number, because the mean of its divisors is an integer number (1393091566272).

Almost surely, 2^{121544361066272} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121544361066272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133736790362112).

121544361066272 is an abundant number, since it is smaller than the sum of its proper divisors (145929219657952).

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

121544361066272 is a wasteful number, since it uses less digits than its factorization.

121544361066272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211231 (or 211223 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 121544361066272 in words is "one hundred twenty-one trillion, five hundred forty-four billion, three hundred sixty-one million, sixty-six thousand, two hundred seventy-two".