2121222211103 has 4 divisors (see below), whose sum is σ = 2121357517440. Its totient is φ = 2121086904768.

The previous prime is 2121222211093. The next prime is 2121222211139. The reversal of 2121222211103 is 3011122221212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121222211103 - 2⁸ = 2121222210847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121222211403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 67629650 + ... + 67661007.

It is an arithmetic number, because the mean of its divisors is an integer number (530339379360).

Almost surely, 2^{2121222211103} is an apocalyptic number.

2121222211103 is a deficient number, since it is larger than the sum of its proper divisors (135306337).

2121222211103 is a wasteful number, since it uses less digits than its factorization.

2121222211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135306336.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 2121222211103 its reverse (3011122221212), we get a palindrome (5132344432315).

The spelling of 2121222211103 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred eleven thousand, one hundred three".