921072221012011 has 2 divisors, whose sum is σ = 921072221012012. Its totient is φ = 921072221012010.

The previous prime is 921072221011853. The next prime is 921072221012017. The reversal of 921072221012011 is 110210122270129.

921072221012011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 921072221012011 - 2³⁷ = 920934782058539 is a prime.

It is not a weakly prime, because it can be changed into another prime (921072221012017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460536110506005 + 460536110506006.

It is an arithmetic number, because the mean of its divisors is an integer number (460536110506006).

Almost surely, 2^{921072221012011} is an apocalyptic number.

921072221012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

921072221012011 is an equidigital number, since it uses as much as digits as its factorization.

921072221012011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 921072221012011 in words is "nine hundred twenty-one trillion, seventy-two billion, two hundred twenty-one million, twelve thousand, eleven".