220123144 has 16 divisors (see below), whose sum is σ = 412891200. Its totient is φ = 110018832.

The previous prime is 220123139. The next prime is 220123147. The reversal of 220123144 is 441321022.

It is not an unprimeable number, because it can be changed into a prime (220123147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31437 + ... + 37795.

It is an arithmetic number, because the mean of its divisors is an integer number (25805700).

Almost surely, 2^220123144 is an apocalyptic number.

It is an amenable number.

220123144 is a deficient number, since it is larger than the sum of its proper divisors (192768056).

220123144 is a wasteful number, since it uses less digits than its factorization.

220123144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10692 (or 10688 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 220123144 is about 14836.5475768455. The cubic root of 220123144 is about 603.7936885828.

Adding to 220123144 its reverse (441321022), we get a palindrome (661444166).

The spelling of 220123144 in words is "two hundred twenty million, one hundred twenty-three thousand, one hundred forty-four".