120221144 has 16 divisors (see below), whose sum is σ = 238674600. Its totient is φ = 56574592.

The previous prime is 120221137. The next prime is 120221147. The reversal of 120221144 is 441122021.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441854 + ... + 442125.

Almost surely, 2^120221144 is an apocalyptic number.

It is an amenable number.

120221144 is a deficient number, since it is larger than the sum of its proper divisors (118453456).

120221144 is a wasteful number, since it uses less digits than its factorization.

120221144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884002 (or 883998 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 120221144 is about 10964.5403004412. The cubic root of 120221144 is about 493.5452222660.

Adding to 120221144 its reverse (441122021), we get a palindrome (561343165).

The spelling of 120221144 in words is "one hundred twenty million, two hundred twenty-one thousand, one hundred forty-four".