11022212309 has 4 divisors (see below), whose sum is σ = 11022547116. Its totient is φ = 11021877504.

The previous prime is 11022212297. The next prime is 11022212321. The reversal of 11022212309 is 90321222011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90321222011 = 443 ⋅203885377.

It is an interprime number because it is at equal distance from previous prime (11022212297) and next prime (11022212321).

It can be written as a sum of positive squares in 2 ways, for example, as 2355160900 + 8667051409 = 48530^2 + 93097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11022212309 is a prime.

It is a super-2 number, since 2×11022212309² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022412309) 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, 111884 + ... + 185909.

It is an arithmetic number, because the mean of its divisors is an integer number (2755636779).

Almost surely, 2^11022212309 is an apocalyptic number.

It is an amenable number.

11022212309 is a deficient number, since it is larger than the sum of its proper divisors (334807).

11022212309 is an equidigital number, since it uses as much as digits as its factorization.

11022212309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334806.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 11022212309 in words is "eleven billion, twenty-two million, two hundred twelve thousand, three hundred nine".