221330120413 has 2 divisors, whose sum is σ = 221330120414. Its totient is φ = 221330120412.

The previous prime is 221330120387. The next prime is 221330120419. The reversal of 221330120413 is 314021033122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139650195204 + 81679925209 = 373698^2 + 285797^2 .

It is a cyclic number.

It is not a de Polignac number, because 221330120413 - 2¹³ = 221330112221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221330120419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110665060206 + 110665060207.

It is an arithmetic number, because the mean of its divisors is an integer number (110665060207).

Almost surely, 2^221330120413 is an apocalyptic number.

It is an amenable number.

221330120413 is a deficient number, since it is larger than the sum of its proper divisors (1).

221330120413 is an equidigital number, since it uses as much as digits as its factorization.

221330120413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221330120413 its reverse (314021033122), we get a palindrome (535351153535).

The spelling of 221330120413 in words is "two hundred twenty-one billion, three hundred thirty million, one hundred twenty thousand, four hundred thirteen".