210211003110121 has 24 divisors (see below), whose sum is σ = 228791801095704. Its totient is φ = 193046316503040.

The previous prime is 210211003110089. The next prime is 210211003110131. The reversal of 210211003110121 is 121011300112012.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 50713426424896 + 159497576685225 = 7121336^2 + 12629235^2 .

It is not a de Polignac number, because 210211003110121 - 2⁵ = 210211003110089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210211003110095 and 210211003110104.

It is not an unprimeable number, because it can be changed into a prime (210211003110131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 716218761 + ... + 716512201.

It is an arithmetic number, because the mean of its divisors is an integer number (9532991712321).

Almost surely, 2^{210211003110121} is an apocalyptic number.

It is an amenable number.

210211003110121 is a deficient number, since it is larger than the sum of its proper divisors (18580797985583).

210211003110121 is a wasteful number, since it uses less digits than its factorization.

210211003110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315181 (or 315168 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 210211003110121 its reverse (121011300112012), we get a palindrome (331222303222133).

The spelling of 210211003110121 in words is "two hundred ten trillion, two hundred eleven billion, three million, one hundred ten thousand, one hundred twenty-one".