210100221220210 has 32 divisors (see below), whose sum is σ = 391229388955440. Its totient is φ = 81140435539968.

The previous prime is 210100221220093. The next prime is 210100221220243. The reversal of 210100221220210 is 12022122001012.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4848438474889 + 205251782745321 = 2201917^2 + 14326611^2 .

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, 6082554 + ... + 21382186.

Almost surely, 2^{210100221220210} is an apocalyptic number.

210100221220210 is a deficient number, since it is larger than the sum of its proper divisors (181129167735230).

210100221220210 is a wasteful number, since it uses less digits than its factorization.

210100221220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15347022.

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

Adding to 210100221220210 its reverse (12022122001012), we get a palindrome (222122343221222).

The spelling of 210100221220210 in words is "two hundred ten trillion, one hundred billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".