2121121229011 has 2 divisors, whose sum is σ = 2121121229012. Its totient is φ = 2121121229010.

The previous prime is 2121121229009. The next prime is 2121121229057. The reversal of 2121121229011 is 1109221211212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121121229011 - 2¹ = 2121121229009 is a prime.

It is a super-2 number, since 2×2121121229011² (a number of 25 digits) contains 22 as substring.

Together with 2121121229009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2121121289011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060560614505 + 1060560614506.

It is an arithmetic number, because the mean of its divisors is an integer number (1060560614506).

Almost surely, 2^{2121121229011} is an apocalyptic number.

2121121229011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121121229011 is an equidigital number, since it uses as much as digits as its factorization.

2121121229011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 2121121229011 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-nine thousand, eleven".