221211022220210 has 64 divisors (see below), whose sum is σ = 439564712895360. Its totient is φ = 79483735902720.

The previous prime is 221211022220203. The next prime is 221211022220213. The reversal of 221211022220210 is 12022220112122.

It is not an unprimeable number, because it can be changed into a prime (221211022220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19578899 + ... + 28735958.

It is an arithmetic number, because the mean of its divisors is an integer number (6868198638990).

Almost surely, 2^{221211022220210} is an apocalyptic number.

221211022220210 is a deficient number, since it is larger than the sum of its proper divisors (218353690675150).

221211022220210 is a wasteful number, since it uses less digits than its factorization.

221211022220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48315371.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221211022220210 its reverse (12022220112122), we get a palindrome (233233242332332).

The spelling of 221211022220210 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty-two million, two hundred twenty thousand, two hundred ten".