10211001220221 has 16 divisors (see below), whose sum is σ = 13933517330880. Its totient is φ = 6649752686720.

The previous prime is 10211001220201. The next prime is 10211001220253. The reversal of 10211001220221 is 12202210011201.

It is a cyclic number.

It is not a de Polignac number, because 10211001220221 - 2⁹ = 10211001219709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10211001220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211001220201) 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, 230360070 + ... + 230404391.

It is an arithmetic number, because the mean of its divisors is an integer number (870844833180).

Almost surely, 2^{10211001220221} is an apocalyptic number.

It is an amenable number.

10211001220221 is a deficient number, since it is larger than the sum of its proper divisors (3722516110659).

10211001220221 is an equidigital number, since it uses as much as digits as its factorization.

10211001220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460764636.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10211001220221 its reverse (12202210011201), we get a palindrome (22413211231422).

The spelling of 10211001220221 in words is "ten trillion, two hundred eleven billion, one million, two hundred twenty thousand, two hundred twenty-one".