210110200010121 has 4 divisors (see below), whose sum is σ = 280146933346832. Its totient is φ = 140073466673412.

The previous prime is 210110200010111. The next prime is 210110200010149. The reversal of 210110200010121 is 121010002011012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 210110200010121 - 2⁶ = 210110200010057 is a prime.

It is a super-2 number, since 2×210110200010121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210110200010097 and 210110200010106.

It is not an unprimeable number, because it can be changed into a prime (210110200010111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35018366668351 + ... + 35018366668356.

It is an arithmetic number, because the mean of its divisors is an integer number (70036733336708).

Almost surely, 2^{210110200010121} is an apocalyptic number.

It is an amenable number.

210110200010121 is a deficient number, since it is larger than the sum of its proper divisors (70036733336711).

210110200010121 is an equidigital number, since it uses as much as digits as its factorization.

210110200010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70036733336710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210110200010121 its reverse (121010002011012), we get a palindrome (331120202021133).

The spelling of 210110200010121 in words is "two hundred ten trillion, one hundred ten billion, two hundred million, ten thousand, one hundred twenty-one".