221011020011 has 2 divisors, whose sum is σ = 221011020012. Its totient is φ = 221011020010.

The previous prime is 221011019951. The next prime is 221011020023. The reversal of 221011020011 is 110020110122.

221011020011 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 221011020011 - 2²² = 221006825707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221011019974 and 221011020001.

It is not a weakly prime, because it can be changed into another prime (221011020211) 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, 110505510005 + 110505510006.

It is an arithmetic number, because the mean of its divisors is an integer number (110505510006).

Almost surely, 2^221011020011 is an apocalyptic number.

221011020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221011020011 is an equidigital number, since it uses as much as digits as its factorization.

221011020011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221011020011 its reverse (110020110122), we get a palindrome (331031130133).

The spelling of 221011020011 in words is "two hundred twenty-one billion, eleven million, twenty thousand, eleven".