21222302220010 has 16 divisors (see below), whose sum is σ = 38207118742056. Its totient is φ = 8487370944448.

The previous prime is 21222302219981. The next prime is 21222302220011. The reversal of 21222302220010 is 1002220322212.

It can be written as a sum of positive squares in 4 ways, for example, as 19377190214209 + 1845112005801 = 4401953^2 + 1358349^2 .

It is a super-2 number, since 2×21222302220010² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21222302220010.

It is not an unprimeable number, because it can be changed into a prime (21222302220011) 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, 193685437 + ... + 193794976.

Almost surely, 2^{21222302220010} is an apocalyptic number.

21222302220010 is a deficient number, since it is larger than the sum of its proper divisors (16984816522046).

21222302220010 is a wasteful number, since it uses less digits than its factorization.

21222302220010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387485897.

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

Adding to 21222302220010 its reverse (1002220322212), we get a palindrome (22224522542222).

The spelling of 21222302220010 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred two million, two hundred twenty thousand, ten".