2121300011 has 4 divisors (see below), whose sum is σ = 2232947400. Its totient is φ = 2009652624.

The previous prime is 2121300007. The next prime is 2121300019. The reversal of 2121300011 is 1100031212.

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 2121300011 - 2² = 2121300007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121299965 and 2121300001.

It is not an unprimeable number, because it can be changed into a prime (2121300019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55823666 + ... + 55823703.

It is an arithmetic number, because the mean of its divisors is an integer number (558236850).

Almost surely, 2^2121300011 is an apocalyptic number.

2121300011 is a deficient number, since it is larger than the sum of its proper divisors (111647389).

2121300011 is a wasteful number, since it uses less digits than its factorization.

2121300011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111647388.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2121300011 is about 46057.5727866765. The cubic root of 2121300011 is about 1284.8941882219.

Adding to 2121300011 its reverse (1100031212), we get a palindrome (3221331223).

The spelling of 2121300011 in words is "two billion, one hundred twenty-one million, three hundred thousand, eleven".