212002000002221 has 16 divisors (see below), whose sum is σ = 249079135159680. Its totient is φ = 177893884480320.

The previous prime is 212002000002197. The next prime is 212002000002263. The reversal of 212002000002221 is 122200000200212.

It is a cyclic number.

It is not a de Polignac number, because 212002000002221 - 2⁶ = 212002000002157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212002000002196 and 212002000002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212002000002271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38634185 + ... + 43779038.

It is an arithmetic number, because the mean of its divisors is an integer number (15567445947480).

Almost surely, 2^{212002000002221} is an apocalyptic number.

It is an amenable number.

212002000002221 is a deficient number, since it is larger than the sum of its proper divisors (37077135157459).

212002000002221 is a wasteful number, since it uses less digits than its factorization.

212002000002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82431236.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 212002000002221 its reverse (122200000200212), we get a palindrome (334202000202433).

The spelling of 212002000002221 in words is "two hundred twelve trillion, two billion, two thousand, two hundred twenty-one".