221021201002210 has 32 divisors (see below), whose sum is σ = 478602299917440. Its totient is φ = 71790344986752.

The previous prime is 221021201002127. The next prime is 221021201002241. The reversal of 221021201002210 is 12200102120122.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 83090675739 + ... + 83090678398.

It is an arithmetic number, because the mean of its divisors is an integer number (14956321872420).

Almost surely, 2^{221021201002210} is an apocalyptic number.

221021201002210 is an abundant number, since it is smaller than the sum of its proper divisors (257581098915230).

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

221021201002210 is a wasteful number, since it uses less digits than its factorization.

221021201002210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166181354170.

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

Adding to 221021201002210 its reverse (12200102120122), we get a palindrome (233221303122332).

The spelling of 221021201002210 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred one million, two thousand, two hundred ten".