120220945 has 16 divisors (see below), whose sum is σ = 160376832. Its totient is φ = 85913280.

The previous prime is 120220943. The next prime is 120220973. The reversal of 120220945 is 549022021.

It is not a de Polignac number, because 120220945 - 2¹ = 120220943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120220943) 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 15 ways as a sum of consecutive naturals, for example, 27817 + ... + 31846.

It is an arithmetic number, because the mean of its divisors is an integer number (10023552).

Almost surely, 2^120220945 is an apocalyptic number.

It is an amenable number.

120220945 is a deficient number, since it is larger than the sum of its proper divisors (40155887).

120220945 is a wasteful number, since it uses less digits than its factorization.

120220945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59712.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 120220945 is about 10964.5312257296. The cubic root of 120220945 is about 493.5449499468.

Adding to 120220945 its reverse (549022021), we get a palindrome (669242966).

The spelling of 120220945 in words is "one hundred twenty million, two hundred twenty thousand, nine hundred forty-five".