11212003321 has 2 divisors, whose sum is σ = 11212003322. Its totient is φ = 11212003320.

The previous prime is 11212003261. The next prime is 11212003373. The reversal of 11212003321 is 12330021211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7803778921 + 3408224400 = 88339^2 + 58380^2 .

It is an emirp because it is prime and its reverse (12330021211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11212003321 - 2¹³ = 11211995129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212003295 and 11212003304.

It is not a weakly prime, because it can be changed into another prime (11212003391) 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, 5606001660 + 5606001661.

It is an arithmetic number, because the mean of its divisors is an integer number (5606001661).

Almost surely, 2^11212003321 is an apocalyptic number.

It is an amenable number.

11212003321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212003321 is an equidigital number, since it uses as much as digits as its factorization.

11212003321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11212003321 its reverse (12330021211), we get a palindrome (23542024532).

The spelling of 11212003321 in words is "eleven billion, two hundred twelve million, three thousand, three hundred twenty-one".