2121021110110 has 32 divisors (see below), whose sum is σ = 4503993219072. Its totient is φ = 703748939040.

The previous prime is 2121021110099. The next prime is 2121021110129. The reversal of 2121021110110 is 110111201212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488712372 + ... + 488716711.

It is an arithmetic number, because the mean of its divisors is an integer number (140749788096).

Almost surely, 2^{2121021110110} is an apocalyptic number.

2121021110110 is an abundant number, since it is smaller than the sum of its proper divisors (2382972108962).

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

2121021110110 is a wasteful number, since it uses less digits than its factorization.

2121021110110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977429128.

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

Adding to 2121021110110 its reverse (110111201212), we get a palindrome (2231132311322).

The spelling of 2121021110110 in words is "two trillion, one hundred twenty-one billion, twenty-one million, one hundred ten thousand, one hundred ten".