21210102202210 has 16 divisors (see below), whose sum is σ = 38198204021376. Its totient is φ = 8479591979248.

The previous prime is 21210102202199. The next prime is 21210102202231. The reversal of 21210102202210 is 1220220101212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556092682 + ... + 556130821.

It is an arithmetic number, because the mean of its divisors is an integer number (2387387751336).

Almost surely, 2^{21210102202210} is an apocalyptic number.

21210102202210 is a deficient number, since it is larger than the sum of its proper divisors (16988101819166).

21210102202210 is a wasteful number, since it uses less digits than its factorization.

21210102202210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112225417.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21210102202210 its reverse (1220220101212), we get a palindrome (22430322303422).

The spelling of 21210102202210 in words is "twenty-one trillion, two hundred ten billion, one hundred two million, two hundred two thousand, two hundred ten".