21210200222210 has 16 divisors (see below), whose sum is σ = 38197345200192. Its totient is φ = 8479861244400.

The previous prime is 21210200222173. The next prime is 21210200222231. The reversal of 21210200222210 is 1222200201212.

It is a happy number.

It is a Curzon 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, 527334446 + ... + 527374665.

It is an arithmetic number, because the mean of its divisors is an integer number (2387334075012).

Almost surely, 2^{21210200222210} is an apocalyptic number.

21210200222210 is a deficient number, since it is larger than the sum of its proper divisors (16987144977982).

21210200222210 is a wasteful number, since it uses less digits than its factorization.

21210200222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054711129.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21210200222210 its reverse (1222200201212), we get a palindrome (22432400423422).

The spelling of 21210200222210 in words is "twenty-one trillion, two hundred ten billion, two hundred million, two hundred twenty-two thousand, two hundred ten".