220120144 has 40 divisors (see below), whose sum is σ = 438596928. Its totient is φ = 106955520.

The previous prime is 220120133. The next prime is 220120157. The reversal of 220120144 is 441021022.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227149 + ... + 228115.

Almost surely, 2^220120144 is an apocalyptic number.

It is an amenable number.

220120144 is a deficient number, since it is larger than the sum of its proper divisors (218476784).

220120144 is a wasteful number, since it uses less digits than its factorization.

220120144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 220120144 is about 14836.4464748133. The cubic root of 220120144 is about 603.7909455890.

Adding to 220120144 its reverse (441021022), we get a palindrome (661141166).

The spelling of 220120144 in words is "two hundred twenty million, one hundred twenty thousand, one hundred forty-four".