11031321211 has 2 divisors, whose sum is σ = 11031321212. Its totient is φ = 11031321210.

The previous prime is 11031321163. The next prime is 11031321221. The reversal of 11031321211 is 11212313011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11031321211 - 2¹¹ = 11031319163 is a prime.

It is not a weakly prime, because it can be changed into another prime (11031321221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5515660605 + 5515660606.

It is an arithmetic number, because the mean of its divisors is an integer number (5515660606).

Almost surely, 2^11031321211 is an apocalyptic number.

11031321211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11031321211 is an equidigital number, since it uses as much as digits as its factorization.

11031321211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11031321211 its reverse (11212313011), we get a palindrome (22243634222).

The spelling of 11031321211 in words is "eleven billion, thirty-one million, three hundred twenty-one thousand, two hundred eleven".