2121311001211 has 2 divisors, whose sum is σ = 2121311001212. Its totient is φ = 2121311001210.

The previous prime is 2121311001193. The next prime is 2121311001221. The reversal of 2121311001211 is 1121001131212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121311001211 - 2³³ = 2112721066619 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121311001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060655500605 + 1060655500606.

It is an arithmetic number, because the mean of its divisors is an integer number (1060655500606).

Almost surely, 2^{2121311001211} is an apocalyptic number.

2121311001211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121311001211 is an equidigital number, since it uses as much as digits as its factorization.

2121311001211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 2121311001211 its reverse (1121001131212), we get a palindrome (3242312132423).

The spelling of 2121311001211 in words is "two trillion, one hundred twenty-one billion, three hundred eleven million, one thousand, two hundred eleven".