11021220311 has 2 divisors, whose sum is σ = 11021220312. Its totient is φ = 11021220310.

The previous prime is 11021220283. The next prime is 11021220319. The reversal of 11021220311 is 11302212011.

It is a strong prime.

It is an emirp because it is prime and its reverse (11302212011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11021220311 - 2¹⁸ = 11020958167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021220319) 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, 5510610155 + 5510610156.

It is an arithmetic number, because the mean of its divisors is an integer number (5510610156).

Almost surely, 2^11021220311 is an apocalyptic number.

11021220311 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021220311 is an equidigital number, since it uses as much as digits as its factorization.

11021220311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11021220311 its reverse (11302212011), we get a palindrome (22323432322).

The spelling of 11021220311 in words is "eleven billion, twenty-one million, two hundred twenty thousand, three hundred eleven".