2121210011 has 2 divisors, whose sum is σ = 2121210012. Its totient is φ = 2121210010.

The previous prime is 2121209927. The next prime is 2121210019. The reversal of 2121210011 is 1100121212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121210011 - 2²² = 2117015707 is a prime.

It is a super-3 number, since 3×2121210011³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121209974 and 2121210001.

It is not a weakly prime, because it can be changed into another prime (2121210019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060605005 + 1060605006.

It is an arithmetic number, because the mean of its divisors is an integer number (1060605006).

Almost surely, 2^2121210011 is an apocalyptic number.

2121210011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121210011 is an equidigital number, since it uses as much as digits as its factorization.

2121210011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2121210011 is about 46056.5957382870. The cubic root of 2121210011 is about 1284.8760166429.

Adding to 2121210011 its reverse (1100121212), we get a palindrome (3221331223).

The spelling of 2121210011 in words is "two billion, one hundred twenty-one million, two hundred ten thousand, eleven".