210021121112201 has 16 divisors (see below), whose sum is σ = 242500427008896. Its totient is φ = 178160915114496.

The previous prime is 210021121112087. The next prime is 210021121112219. The reversal of 210021121112201 is 102211121120012.

It is a cyclic number.

It is not a de Polignac number, because 210021121112201 - 2¹⁰ = 210021121111177 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210021121112201.

It is not an unprimeable number, because it can be changed into a prime (210021121112401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95704475 + ... + 97874351.

It is an arithmetic number, because the mean of its divisors is an integer number (15156276688056).

Almost surely, 2^{210021121112201} is an apocalyptic number.

It is an amenable number.

210021121112201 is a deficient number, since it is larger than the sum of its proper divisors (32479305896695).

210021121112201 is a wasteful number, since it uses less digits than its factorization.

210021121112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312528.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210021121112201 its reverse (102211121120012), we get a palindrome (312232242232213).

The spelling of 210021121112201 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred one".