21102000210122 has 32 divisors (see below), whose sum is σ = 34254626659344. Its totient is φ = 9691844198400.

The previous prime is 21102000210101. The next prime is 21102000210197. The reversal of 21102000210122 is 22101200020112.

It can be written as a sum of positive squares in 8 ways, for example, as 349684178281 + 20752316031841 = 591341^2 + 4555471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21102000210097 and 21102000210106.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2253722 + ... + 6876282.

Almost surely, 2^{21102000210122} is an apocalyptic number.

21102000210122 is a deficient number, since it is larger than the sum of its proper divisors (13152626449222).

21102000210122 is a wasteful number, since it uses less digits than its factorization.

21102000210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623434.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21102000210122 its reverse (22101200020112), we get a palindrome (43203200230234).

The spelling of 21102000210122 in words is "twenty-one trillion, one hundred two billion, two hundred ten thousand, one hundred twenty-two".