221002102100212 has 12 divisors (see below), whose sum is σ = 386798292149220. Its totient is φ = 110488304343296.

The previous prime is 221002102100189. The next prime is 221002102100233. The reversal of 221002102100212 is 212001201200122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 133681786423056 + 87320315677156 = 11562084^2 + 9344534^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 3186637693 + ... + 3186707044.

It is an arithmetic number, because the mean of its divisors is an integer number (32233191012435).

Almost surely, 2^{221002102100212} is an apocalyptic number.

It is an amenable number.

221002102100212 is a deficient number, since it is larger than the sum of its proper divisors (165796190049008).

221002102100212 is a wasteful number, since it uses less digits than its factorization.

221002102100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373353410 (or 6373353408 counting only the distinct ones).

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

Adding to 221002102100212 its reverse (212001201200122), we get a palindrome (433003303300334).

The spelling of 221002102100212 in words is "two hundred twenty-one trillion, two billion, one hundred two million, one hundred thousand, two hundred twelve".