2121103311 has 16 divisors (see below), whose sum is σ = 3032409600. Its totient is φ = 1314039168.

The previous prime is 2121103289. The next prime is 2121103321. The reversal of 2121103311 is 1133011212.

It is a happy number.

It is not a de Polignac number, because 2121103311 - 2⁹ = 2121102799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121103321) 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 15 ways as a sum of consecutive naturals, for example, 259201 + ... + 267258.

It is an arithmetic number, because the mean of its divisors is an integer number (189525600).

Almost surely, 2^2121103311 is an apocalyptic number.

2121103311 is a deficient number, since it is larger than the sum of its proper divisors (911306289).

2121103311 is a wasteful number, since it uses less digits than its factorization.

2121103311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526558.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2121103311 is about 46055.4373662872. The cubic root of 2121103311 is about 1284.8544725605.

Adding to 2121103311 its reverse (1133011212), we get a palindrome (3254114523).

The spelling of 2121103311 in words is "two billion, one hundred twenty-one million, one hundred three thousand, three hundred eleven".