11222311 has 4 divisors (see below), whose sum is σ = 11235592. Its totient is φ = 11209032.

The previous prime is 11222303. The next prime is 11222317. The reversal of 11222311 is 11322211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11222311 - 2³ = 11222303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222291 and 11222300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5280 + ... + 7093.

It is an arithmetic number, because the mean of its divisors is an integer number (2808898).

Almost surely, 2^11222311 is an apocalyptic number.

11222311 is a deficient number, since it is larger than the sum of its proper divisors (13281).

11222311 is an equidigital number, since it uses as much as digits as its factorization.

11222311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280.

The product of its digits is 24, while the sum is 13.

The square root of 11222311 is about 3349.9717909260. The cubic root of 11222311 is about 223.8862557617.

Adding to 11222311 its reverse (11322211), we get a palindrome (22544522).

The spelling of 11222311 in words is "eleven million, two hundred twenty-two thousand, three hundred eleven".