210221222121201 has 32 divisors (see below), whose sum is σ = 286702198030080. Its totient is φ = 136983412076544.

The previous prime is 210221222121107. The next prime is 210221222121203. The reversal of 210221222121201 is 102121222122012.

It is not a de Polignac number, because 210221222121201 - 2¹⁹ = 210221221596913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210221222121203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17333956 + ... + 26849738.

It is an arithmetic number, because the mean of its divisors is an integer number (8959443688440).

Almost surely, 2^{210221222121201} is an apocalyptic number.

It is an amenable number.

210221222121201 is a deficient number, since it is larger than the sum of its proper divisors (76480975908879).

210221222121201 is an equidigital number, since it uses as much as digits as its factorization.

210221222121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9516825.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 210221222121201 its reverse (102121222122012), we get a palindrome (312342444243213).

The spelling of 210221222121201 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred one".