221111002213 has 2 divisors, whose sum is σ = 221111002214. Its totient is φ = 221111002212.

The previous prime is 221111002183. The next prime is 221111002219. The reversal of 221111002213 is 312200111122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142961122404 + 78149879809 = 378102^2 + 279553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221111002213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221111002219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555501106 + 110555501107.

It is an arithmetic number, because the mean of its divisors is an integer number (110555501107).

Almost surely, 2^221111002213 is an apocalyptic number.

It is an amenable number.

221111002213 is a deficient number, since it is larger than the sum of its proper divisors (1).

221111002213 is an equidigital number, since it uses as much as digits as its factorization.

221111002213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221111002213 its reverse (312200111122), we get a palindrome (533311113335).

The spelling of 221111002213 in words is "two hundred twenty-one billion, one hundred eleven million, two thousand, two hundred thirteen".