210221202112101 has 24 divisors (see below), whose sum is σ = 308810966967360. Its totient is φ = 137766973873536.

The previous prime is 210221202112091. The next prime is 210221202112189. The reversal of 210221202112101 is 101211202122012.

210221202112101 is a `hidden beast` number, since 2 + 1 + 0 + 221 + 20 + 211 + 210 + 1 = 666.

It is not a de Polignac number, because 210221202112101 - 2⁶ = 210221202112037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221202112601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6999960 + ... + 21666606.

It is an arithmetic number, because the mean of its divisors is an integer number (12867123623640).

Almost surely, 2^{210221202112101} is an apocalyptic number.

It is an amenable number.

210221202112101 is a deficient number, since it is larger than the sum of its proper divisors (98589764855259).

210221202112101 is a wasteful number, since it uses less digits than its factorization.

210221202112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14693705 (or 14693702 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210221202112101 its reverse (101211202122012), we get a palindrome (311432404234113).

The spelling of 210221202112101 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred two million, one hundred twelve thousand, one hundred one".