11030030312221 has 2 divisors, whose sum is σ = 11030030312222. Its totient is φ = 11030030312220.

The previous prime is 11030030312219. The next prime is 11030030312243. The reversal of 11030030312221 is 12221303003011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5767658544025 + 5262371768196 = 2401595^2 + 2293986^2 .

It is an emirp because it is prime and its reverse (12221303003011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11030030312221 - 2¹ = 11030030312219 is a prime.

Together with 11030030312219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11030030319221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5515015156110 + 5515015156111.

It is an arithmetic number, because the mean of its divisors is an integer number (5515015156111).

Almost surely, 2^{11030030312221} is an apocalyptic number.

It is an amenable number.

11030030312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11030030312221 is an equidigital number, since it uses as much as digits as its factorization.

11030030312221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11030030312221 its reverse (12221303003011), we get a palindrome (23251333315232).

The spelling of 11030030312221 in words is "eleven trillion, thirty billion, thirty million, three hundred twelve thousand, two hundred twenty-one".