2121110220110 has 32 divisors (see below), whose sum is σ = 4403458192320. Its totient is φ = 720565880832.

The previous prime is 2121110220091. The next prime is 2121110220121. The reversal of 2121110220110 is 110220111212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138990419 + ... + 139005678.

It is an arithmetic number, because the mean of its divisors is an integer number (137608068510).

Almost surely, 2^{2121110220110} is an apocalyptic number.

2121110220110 is an abundant number, since it is smaller than the sum of its proper divisors (2282347972210).

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

2121110220110 is a wasteful number, since it uses less digits than its factorization.

2121110220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277996220.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2121110220110 its reverse (110220111212), we get a palindrome (2231330331322).

The spelling of 2121110220110 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, one hundred ten".