220212144 has 60 divisors (see below), whose sum is σ = 617960200. Its totient is φ = 73204992.

The previous prime is 220212121. The next prime is 220212151. The reversal of 220212144 is 441212022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 57027 + ... + 60765.

Almost surely, 2^220212144 is an apocalyptic number.

220212144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220212144 is an abundant number, since it is smaller than the sum of its proper divisors (397748056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220212144 is a wasteful number, since it uses less digits than its factorization.

220212144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162 (or 4153 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 220212144 is about 14839.5466238022. The cubic root of 220212144 is about 603.8750527328.

Adding to 220212144 its reverse (441212022), we get a palindrome (661424166).

The spelling of 220212144 in words is "two hundred twenty million, two hundred twelve thousand, one hundred forty-four".