221201012210 has 8 divisors (see below), whose sum is σ = 398161821996. Its totient is φ = 88480404880.

The previous prime is 221201012209. The next prime is 221201012231. The reversal of 221201012210 is 12210102122.

221201012210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 221051365921 + 149646289 = 470161^2 + 12233^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11060050601 + ... + 11060050620.

Almost surely, 2^221201012210 is an apocalyptic number.

221201012210 is a deficient number, since it is larger than the sum of its proper divisors (176960809786).

221201012210 is a wasteful number, since it uses less digits than its factorization.

221201012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120101228.

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

Adding to 221201012210 its reverse (12210102122), we get a palindrome (233411114332).

The spelling of 221201012210 in words is "two hundred twenty-one billion, two hundred one million, twelve thousand, two hundred ten".