220218242 has 8 divisors (see below), whose sum is σ = 333250956. Its totient is φ = 109134592.

The previous prime is 220218239. The next prime is 220218247. The reversal of 220218242 is 242812022.

It can be written as a sum of positive squares in 2 ways, for example, as 132963961 + 87254281 = 11531^2 + 9341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (220218247) 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, 486983 + ... + 487434.

Almost surely, 2^220218242 is an apocalyptic number.

220218242 is a deficient number, since it is larger than the sum of its proper divisors (113032714).

220218242 is a wasteful number, since it uses less digits than its factorization.

220218242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974532.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 220218242 is about 14839.7520868780. The cubic root of 220218242 is about 603.8806267459.

The spelling of 220218242 in words is "two hundred twenty million, two hundred eighteen thousand, two hundred forty-two".