2121212011110 has 64 divisors (see below), whose sum is σ = 5171116833792. Its totient is φ = 556810310016.

The previous prime is 2121212011097. The next prime is 2121212011169. The reversal of 2121212011110 is 111102121212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2121212011110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1539289 + ... + 2571348.

It is an arithmetic number, because the mean of its divisors is an integer number (80798700528).

Almost surely, 2^{2121212011110} is an apocalyptic number.

2121212011110 is an abundant number, since it is smaller than the sum of its proper divisors (3049904822682).

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

2121212011110 is a wasteful number, since it uses less digits than its factorization.

2121212011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110917.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2121212011110 its reverse (111102121212), we get a palindrome (2232314132322).

The spelling of 2121212011110 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, eleven thousand, one hundred ten".