11221004321 has 2 divisors, whose sum is σ = 11221004322. Its totient is φ = 11221004320.

The previous prime is 11221004281. The next prime is 11221004369. The reversal of 11221004321 is 12340012211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6753552400 + 4467451921 = 82180^2 + 66839^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221004321 - 2¹⁸ = 11220742177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11221004321.

It is not a weakly prime, because it can be changed into another prime (11221004371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610502160 + 5610502161.

It is an arithmetic number, because the mean of its divisors is an integer number (5610502161).

Almost surely, 2^11221004321 is an apocalyptic number.

It is an amenable number.

11221004321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221004321 is an equidigital number, since it uses as much as digits as its factorization.

11221004321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11221004321 its reverse (12340012211), we get a palindrome (23561016532).

The spelling of 11221004321 in words is "eleven billion, two hundred twenty-one million, four thousand, three hundred twenty-one".