120544221 has 16 divisors (see below), whose sum is σ = 183900800. Its totient is φ = 68802048.

The previous prime is 120544217. The next prime is 120544231. The reversal of 120544221 is 122445021.

It is not a de Polignac number, because 120544221 - 2² = 120544217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120544201) 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 15 ways as a sum of consecutive naturals, for example, 18345 + ... + 24033.

It is an arithmetic number, because the mean of its divisors is an integer number (11493800).

Almost surely, 2^120544221 is an apocalyptic number.

It is an amenable number.

120544221 is a deficient number, since it is larger than the sum of its proper divisors (63356579).

120544221 is a wasteful number, since it uses less digits than its factorization.

120544221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6708.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 120544221 is about 10979.2632266469. The cubic root of 120544221 is about 493.9869373742.

Adding to 120544221 its reverse (122445021), we get a palindrome (242989242).

The spelling of 120544221 in words is "one hundred twenty million, five hundred forty-four thousand, two hundred twenty-one".