2221220220202 has 8 divisors (see below), whose sum is σ = 3334523810436. Its totient is φ = 1109712283392.

The previous prime is 2221220220181. The next prime is 2221220220203. The reversal of 2221220220202 is 2020220221222.

It can be written as a sum of positive squares in 2 ways, for example, as 1865084593761 + 356135626441 = 1365681^2 + 596771^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2221220220202.

It is not an unprimeable number, because it can be changed into a prime (2221220220203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448910263 + ... + 448915210.

Almost surely, 2^{2221220220202} is an apocalyptic number.

2221220220202 is a deficient number, since it is larger than the sum of its proper divisors (1113303590234).

2221220220202 is a wasteful number, since it uses less digits than its factorization.

2221220220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897826712.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 2221220220202 its reverse (2020220221222), we get a palindrome (4241440441424).

The spelling of 2221220220202 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand, two hundred two".