21302202202210 has 32 divisors (see below), whose sum is σ = 38465593603632. Its totient is φ = 8493893694720.

The previous prime is 21302202202153. The next prime is 21302202202283. The reversal of 21302202202210 is 1220220220312.

It can be written as a sum of positive squares in 8 ways, for example, as 4883246977249 + 16418955224961 = 2209807^2 + 4052031^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1494604 + ... + 6696136.

Almost surely, 2^{21302202202210} is an apocalyptic number.

21302202202210 is a deficient number, since it is larger than the sum of its proper divisors (17163391401422).

21302202202210 is a wasteful number, since it uses less digits than its factorization.

21302202202210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5202838.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21302202202210 its reverse (1220220220312), we get a palindrome (22522422422522).

The spelling of 21302202202210 in words is "twenty-one trillion, three hundred two billion, two hundred two million, two hundred two thousand, two hundred ten".