11002766821 has 2 divisors, whose sum is σ = 11002766822. Its totient is φ = 11002766820.

The previous prime is 11002766773. The next prime is 11002766833. The reversal of 11002766821 is 12866720011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6445841796 + 4556925025 = 80286^2 + 67505^2 .

It is a cyclic number.

It is not a de Polignac number, because 11002766821 - 2¹³ = 11002758629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11002766891) 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, 5501383410 + 5501383411.

It is an arithmetic number, because the mean of its divisors is an integer number (5501383411).

Almost surely, 2^11002766821 is an apocalyptic number.

It is an amenable number.

11002766821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11002766821 is an equidigital number, since it uses as much as digits as its factorization.

11002766821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 11002766821 in words is "eleven billion, two million, seven hundred sixty-six thousand, eight hundred twenty-one".