2121313230011 has 2 divisors, whose sum is σ = 2121313230012. Its totient is φ = 2121313230010.

The previous prime is 2121313229951. The next prime is 2121313230013. The reversal of 2121313230011 is 1100323131212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121313230011 - 2²⁶ = 2121246121147 is a prime.

Together with 2121313230013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2121313230013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060656615005 + 1060656615006.

It is an arithmetic number, because the mean of its divisors is an integer number (1060656615006).

Almost surely, 2^{2121313230011} is an apocalyptic number.

2121313230011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121313230011 is an equidigital number, since it uses as much as digits as its factorization.

2121313230011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2121313230011 its reverse (1100323131212), we get a palindrome (3221636361223).

The spelling of 2121313230011 in words is "two trillion, one hundred twenty-one billion, three hundred thirteen million, two hundred thirty thousand, eleven".