210221102010121 has 16 divisors (see below), whose sum is σ = 210906450028800. Its totient is φ = 209536857129600.

The previous prime is 210221102010103. The next prime is 210221102010133. The reversal of 210221102010121 is 121010201122012.

210221102010121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 210221102010121 - 2⁹ = 210221102009609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210221102010095 and 210221102010104.

It is not an unprimeable number, because it can be changed into a prime (210221102019121) 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, 4369659415 + ... + 4369707523.

It is an arithmetic number, because the mean of its divisors is an integer number (13181653126800).

Almost surely, 2^{210221102010121} is an apocalyptic number.

It is an amenable number.

210221102010121 is a deficient number, since it is larger than the sum of its proper divisors (685348018679).

210221102010121 is an equidigital number, since it uses as much as digits as its factorization.

210221102010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59280.

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

Adding to 210221102010121 its reverse (121010201122012), we get a palindrome (331231303132133).

The spelling of 210221102010121 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred two million, ten thousand, one hundred twenty-one".