2121110110210 has 32 divisors (see below), whose sum is σ = 4699074707712. Its totient is φ = 671296386240.

The previous prime is 2121110110181. The next prime is 2121110110219. The reversal of 2121110110210 is 120110111212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (2121110110219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1165444206 + ... + 1165446025.

It is an arithmetic number, because the mean of its divisors is an integer number (146846084616).

Almost surely, 2^{2121110110210} is an apocalyptic number.

2121110110210 is an abundant number, since it is smaller than the sum of its proper divisors (2577964597502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121110110210 is a wasteful number, since it uses less digits than its factorization.

2121110110210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330890258.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2121110110210 its reverse (120110111212), we get a palindrome (2241220221422).

The spelling of 2121110110210 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, one hundred ten thousand, two hundred ten".