221222122202 has 8 divisors (see below), whose sum is σ = 332599542996. Its totient is φ = 110355607872.

The previous prime is 221222122193. The next prime is 221222122207. The reversal of 221222122202 is 202221222122.

It can be written as a sum of positive squares in 2 ways, for example, as 221181149401 + 40972801 = 470299^2 + 6401^2 .

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 (221222122207) 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, 127725533 + ... + 127727264.

Almost surely, 2^221222122202 is an apocalyptic number.

221222122202 is a deficient number, since it is larger than the sum of its proper divisors (111377420794).

221222122202 is a wasteful number, since it uses less digits than its factorization.

221222122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255453232.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221222122202 its reverse (202221222122), we get a palindrome (423443344324).

It can be divided in two parts, 221222122 and 202, that multiplied together give a palindrome (44686868644).

The spelling of 221222122202 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred two".