2002122218 has 4 divisors (see below), whose sum is σ = 3003183330. Its totient is φ = 1001061108.

The previous prime is 2002122211. The next prime is 2002122233. The reversal of 2002122218 is 8122212002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1600240009 + 401882209 = 40003^2 + 20047^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2002122218.

It is not an unprimeable number, because it can be changed into a prime (2002122211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500530553 + ... + 500530556.

Almost surely, 2^2002122218 is an apocalyptic number.

2002122218 is a deficient number, since it is larger than the sum of its proper divisors (1001061112).

2002122218 is a wasteful number, since it uses less digits than its factorization.

2002122218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001061111.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 2002122218 is about 44745.0803776236. The cubic root of 2002122218 is about 1260.3665302194.

The spelling of 2002122218 in words is "two billion, two million, one hundred twenty-two thousand, two hundred eighteen".