212010222200221 has 8 divisors (see below), whose sum is σ = 219321239607000. Its totient is φ = 204699226132800.

The previous prime is 212010222200209. The next prime is 212010222200291. The reversal of 212010222200221 is 122002222010212.

It can be written as a sum of positive squares in 4 ways, for example, as 32400343936900 + 179609878263321 = 5692130^2 + 13401861^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212010222200221 - 2⁹ = 212010222199709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212010222200291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16375671 + ... + 26309371.

It is an arithmetic number, because the mean of its divisors is an integer number (27415154950875).

Almost surely, 2^{212010222200221} is an apocalyptic number.

It is an amenable number.

212010222200221 is a deficient number, since it is larger than the sum of its proper divisors (7311017406779).

212010222200221 is an equidigital number, since it uses as much as digits as its factorization.

212010222200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10669679.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212010222200221 its reverse (122002222010212), we get a palindrome (334012444210433).

The spelling of 212010222200221 in words is "two hundred twelve trillion, ten billion, two hundred twenty-two million, two hundred thousand, two hundred twenty-one".