221122220210210 has 64 divisors (see below), whose sum is σ = 463813563020544. Its totient is φ = 75008474419200.

The previous prime is 221122220210197. The next prime is 221122220210219. The reversal of 221122220210210 is 12012022221122.

It is not an unprimeable number, because it can be changed into a prime (221122220210219) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 523006286 + ... + 523428905.

It is an arithmetic number, because the mean of its divisors is an integer number (7247086922196).

Almost surely, 2^{221122220210210} is an apocalyptic number.

221122220210210 is an abundant number, since it is smaller than the sum of its proper divisors (242691342810334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221122220210210 is a wasteful number, since it uses less digits than its factorization.

221122220210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046435339.

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

Adding to 221122220210210 its reverse (12012022221122), we get a palindrome (233134242431332).

The spelling of 221122220210210 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty million, two hundred ten thousand, two hundred ten".