2121101222011 has 2 divisors, whose sum is σ = 2121101222012. Its totient is φ = 2121101222010.

The previous prime is 2121101221933. The next prime is 2121101222047. The reversal of 2121101222011 is 1102221011212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121101222011 - 2²⁷ = 2120967004283 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121101222411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060550611005 + 1060550611006.

It is an arithmetic number, because the mean of its divisors is an integer number (1060550611006).

Almost surely, 2^{2121101222011} is an apocalyptic number.

2121101222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121101222011 is an equidigital number, since it uses as much as digits as its factorization.

2121101222011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121101222011 its reverse (1102221011212), we get a palindrome (3223322233223).

The spelling of 2121101222011 in words is "two trillion, one hundred twenty-one billion, one hundred one million, two hundred twenty-two thousand, eleven".