221330120213 has 2 divisors, whose sum is σ = 221330120214. Its totient is φ = 221330120212.

The previous prime is 221330120203. The next prime is 221330120233. The reversal of 221330120213 is 312021033122.

It is an a-pointer prime, because the next prime (221330120233) can be obtained adding 221330120213 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212356915684 + 8973204529 = 460822^2 + 94727^2 .

It is a cyclic number.

It is not a de Polignac number, because 221330120213 - 2¹⁴ = 221330103829 is a prime.

It is a super-2 number, since 2×221330120213² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221330120203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110665060106 + 110665060107.

It is an arithmetic number, because the mean of its divisors is an integer number (110665060107).

Almost surely, 2^221330120213 is an apocalyptic number.

It is an amenable number.

221330120213 is a deficient number, since it is larger than the sum of its proper divisors (1).

221330120213 is an equidigital number, since it uses as much as digits as its factorization.

221330120213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221330120213 its reverse (312021033122), we get a palindrome (533351153335).

The spelling of 221330120213 in words is "two hundred twenty-one billion, three hundred thirty million, one hundred twenty thousand, two hundred thirteen".