120022561 has 8 divisors (see below), whose sum is σ = 127518120. Its totient is φ = 112750848.

The previous prime is 120022559. The next prime is 120022577. The reversal of 120022561 is 165220021.

It can be written as a sum of positive squares in 4 ways, for example, as 18113536 + 101909025 = 4256^2 + 10095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120022561 - 2¹ = 120022559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120022531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54856 + ... + 57001.

It is an arithmetic number, because the mean of its divisors is an integer number (15939765).

Almost surely, 2^120022561 is an apocalyptic number.

It is an amenable number.

120022561 is a deficient number, since it is larger than the sum of its proper divisors (7495559).

120022561 is a wasteful number, since it uses less digits than its factorization.

120022561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111923.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 120022561 is about 10955.4808657585. The cubic root of 120022561 is about 493.2733241572.

Adding to 120022561 its reverse (165220021), we get a palindrome (285242582).

The spelling of 120022561 in words is "one hundred twenty million, twenty-two thousand, five hundred sixty-one".