210122101200121 has 16 divisors (see below), whose sum is σ = 230721728223168. Its totient is φ = 189774194241600.

The previous prime is 210122101200113. The next prime is 210122101200133. The reversal of 210122101200121 is 121002101221012.

It is a cyclic number.

It is not a de Polignac number, because 210122101200121 - 2³ = 210122101200113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210122101200095 and 210122101200104.

It is not an unprimeable number, because it can be changed into a prime (210122101200101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50941735 + ... + 54911788.

It is an arithmetic number, because the mean of its divisors is an integer number (14420108013948).

Almost surely, 2^{210122101200121} is an apocalyptic number.

It is an amenable number.

210122101200121 is a deficient number, since it is larger than the sum of its proper divisors (20599627023047).

210122101200121 is a wasteful number, since it uses less digits than its factorization.

210122101200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105854712.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210122101200121 its reverse (121002101221012), we get a palindrome (331124202421133).

The spelling of 210122101200121 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred one million, two hundred thousand, one hundred twenty-one".