221332211011 has 2 divisors, whose sum is σ = 221332211012. Its totient is φ = 221332211010.

The previous prime is 221332210999. The next prime is 221332211047. The reversal of 221332211011 is 110112233122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221332211011 - 2¹¹ = 221332208963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221332211011.

It is not a weakly prime, because it can be changed into another prime (221332211411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110666105505 + 110666105506.

It is an arithmetic number, because the mean of its divisors is an integer number (110666105506).

Almost surely, 2^221332211011 is an apocalyptic number.

221332211011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221332211011 is an equidigital number, since it uses as much as digits as its factorization.

221332211011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221332211011 its reverse (110112233122), we get a palindrome (331444444133).

The spelling of 221332211011 in words is "two hundred twenty-one billion, three hundred thirty-two million, two hundred eleven thousand, eleven".