11221023311 has 2 divisors, whose sum is σ = 11221023312. Its totient is φ = 11221023310.

The previous prime is 11221023293. The next prime is 11221023361. The reversal of 11221023311 is 11332012211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221023311 is a prime.

It is a super-2 number, since 2×11221023311² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11221023311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221023361) 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, 5610511655 + 5610511656.

It is an arithmetic number, because the mean of its divisors is an integer number (5610511656).

Almost surely, 2^11221023311 is an apocalyptic number.

11221023311 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221023311 is an equidigital number, since it uses as much as digits as its factorization.

11221023311 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 17.

Adding to 11221023311 its reverse (11332012211), we get a palindrome (22553035522).

The spelling of 11221023311 in words is "eleven billion, two hundred twenty-one million, twenty-three thousand, three hundred eleven".