221334041213 has 2 divisors, whose sum is σ = 221334041214. Its totient is φ = 221334041212.

The previous prime is 221334041189. The next prime is 221334041221. The reversal of 221334041213 is 312140433122.

221334041213 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 can be written as a sum of positive squares in only one way, i.e., 202106890969 + 19227150244 = 449563^2 + 138662^2 .

It is a cyclic number.

It is not a de Polignac number, because 221334041213 - 2¹² = 221334037117 is a prime.

It is a super-2 number, since 2×221334041213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221334041263) 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, 110667020606 + 110667020607.

It is an arithmetic number, because the mean of its divisors is an integer number (110667020607).

Almost surely, 2^221334041213 is an apocalyptic number.

It is an amenable number.

221334041213 is a deficient number, since it is larger than the sum of its proper divisors (1).

221334041213 is an equidigital number, since it uses as much as digits as its factorization.

221334041213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221334041213 its reverse (312140433122), we get a palindrome (533474474335).

The spelling of 221334041213 in words is "two hundred twenty-one billion, three hundred thirty-four million, forty-one thousand, two hundred thirteen".