210110210121121 has 8 divisors (see below), whose sum is σ = 217356641821800. Its totient is φ = 202863861889920.

The previous prime is 210110210121113. The next prime is 210110210121157. The reversal of 210110210121121 is 121121012011012.

It can be written as a sum of positive squares in 4 ways, for example, as 87241409576721 + 122868800544400 = 9340311^2 + 11084620^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210110210121121 - 2³ = 210110210121113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210110210121095 and 210110210121104.

It is not an unprimeable number, because it can be changed into a prime (210110210121101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15724650 + ... + 25835731.

It is an arithmetic number, because the mean of its divisors is an integer number (27169580227725).

Almost surely, 2^{210110210121121} is an apocalyptic number.

It is an amenable number.

210110210121121 is a deficient number, since it is larger than the sum of its proper divisors (7246431700679).

210110210121121 is a wasteful number, since it uses less digits than its factorization.

210110210121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41734739.

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

Adding to 210110210121121 its reverse (121121012011012), we get a palindrome (331231222132133).

The spelling of 210110210121121 in words is "two hundred ten trillion, one hundred ten billion, two hundred ten million, one hundred twenty-one thousand, one hundred twenty-one".