2121302211 has 16 divisors (see below), whose sum is σ = 3422605824. Its totient is φ = 1140868224.

The previous prime is 2121302171. The next prime is 2121302219. The reversal of 2121302211 is 1122031212.

It is not a de Polignac number, because 2121302211 - 2¹⁸ = 2121040067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121302219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2970655 + ... + 2971368.

It is an arithmetic number, because the mean of its divisors is an integer number (213912864).

Almost surely, 2^2121302211 is an apocalyptic number.

2121302211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2121302211 is a deficient number, since it is larger than the sum of its proper divisors (1301303613).

2121302211 is a wasteful number, since it uses less digits than its factorization.

2121302211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5942050.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2121302211 is about 46057.5966698220. The cubic root of 2121302211 is about 1284.8946324096.

Adding to 2121302211 its reverse (1122031212), we get a palindrome (3243333423).

The spelling of 2121302211 in words is "two billion, one hundred twenty-one million, three hundred two thousand, two hundred eleven".