218259021124 has 9 divisors (see below), whose sum is σ = 381954922111. Its totient is φ = 109129043380.

The previous prime is 218259021109. The next prime is 218259021139. The reversal of 218259021124 is 421120952812.

The square root of 218259021124 is 467182.

It is a perfect power (a square), and thus also a powerful number.

218259021124 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (218259021109) and next prime (218259021139).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 817569 + ... + 1051159.

Almost surely, 2^218259021124 is an apocalyptic number.

218259021124 is the 467182-nd square number.

It is an amenable number.

218259021124 is a deficient number, since it is larger than the sum of its proper divisors (163695900987).

218259021124 is an frugal number, since it uses more digits than its factorization.

218259021124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467186 (or 233593 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

Adding to 218259021124 its reverse (421120952812), we get a palindrome (639379973936).

The spelling of 218259021124 in words is "two hundred eighteen billion, two hundred fifty-nine million, twenty-one thousand, one hundred twenty-four".