120543221529 has 24 divisors (see below), whose sum is σ = 184645319040. Its totient is φ = 75517999488.

The previous prime is 120543221507. The next prime is 120543221531. The reversal of 120543221529 is 925122345021.

120543221529 is a `hidden beast` number, since 1 + 2 + 0 + 5 + 432 + 215 + 2 + 9 = 666.

It is not a de Polignac number, because 120543221529 - 2⁵ = 120543221497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120543221493 and 120543221502.

It is not an unprimeable number, because it can be changed into a prime (120543221569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509869 + ... + 707850.

It is an arithmetic number, because the mean of its divisors is an integer number (7693554960).

Almost surely, 2^120543221529 is an apocalyptic number.

It is an amenable number.

120543221529 is a deficient number, since it is larger than the sum of its proper divisors (64102097511).

120543221529 is a wasteful number, since it uses less digits than its factorization.

120543221529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218389 (or 1218386 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

It can be divided in two parts, 1205432 and 21529, that added together give a triangular number (1226961 = T₁₅₆₆).

The spelling of 120543221529 in words is "one hundred twenty billion, five hundred forty-three million, two hundred twenty-one thousand, five hundred twenty-nine".