18122220012202 has 8 divisors (see below), whose sum is σ = 27188605277316. Its totient is φ = 9059351586432.

The previous prime is 18122220012157. The next prime is 18122220012217. The reversal of 18122220012202 is 20221002222181.

It can be written as a sum of positive squares in 2 ways, for example, as 17334973733841 + 787246278361 = 4163529^2 + 887269^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879196953 + ... + 879217564.

Almost surely, 2^{18122220012202} is an apocalyptic number.

18122220012202 is a deficient number, since it is larger than the sum of its proper divisors (9066385265114).

18122220012202 is a wasteful number, since it uses less digits than its factorization.

18122220012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758419672.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 18122220012202 its reverse (20221002222181), we get a palindrome (38343222234383).

The spelling of 18122220012202 in words is "eighteen trillion, one hundred twenty-two billion, two hundred twenty million, twelve thousand, two hundred two".