221202210210 has 64 divisors (see below), whose sum is σ = 565559608320. Its totient is φ = 55209366720.

The previous prime is 221202210169. The next prime is 221202210217. The reversal of 221202210210 is 12012202122.

221202210210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221202210210.

It is not an unprimeable number, because it can be changed into a prime (221202210217) 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, 2290486 + ... + 2385105.

It is an arithmetic number, because the mean of its divisors is an integer number (8836868880).

Almost surely, 2^221202210210 is an apocalyptic number.

221202210210 is an abundant number, since it is smaller than the sum of its proper divisors (344357398110).

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

221202210210 is a wasteful number, since it uses less digits than its factorization.

221202210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4675703.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221202210210 its reverse (12012202122), we get a palindrome (233214412332).

The spelling of 221202210210 in words is "two hundred twenty-one billion, two hundred two million, two hundred ten thousand, two hundred ten".