21222102102202 has 16 divisors (see below), whose sum is σ = 32195592109800. Its totient is φ = 10490273347840.

The previous prime is 21222102102163. The next prime is 21222102102203. The reversal of 21222102102202 is 20220120122212.

It can be written as a sum of positive squares in 4 ways, for example, as 20560611053161 + 661491049041 = 4534381^2 + 813321^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21222102102202.

It is not an unprimeable number, because it can be changed into a prime (21222102102203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7613677 + ... + 10020592.

Almost surely, 2^{21222102102202} is an apocalyptic number.

21222102102202 is a deficient number, since it is larger than the sum of its proper divisors (10973490007598).

21222102102202 is a wasteful number, since it uses less digits than its factorization.

21222102102202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17641121.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21222102102202 its reverse (20220120122212), we get a palindrome (41442222224414).

The spelling of 21222102102202 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, one hundred two thousand, two hundred two".