11022232221 has 120 divisors (see below), whose sum is σ = 22230863424. Its totient is φ = 5284880640.

The previous prime is 11022232163. The next prime is 11022232223. The reversal of 11022232221 is 12223222011.

It is not a de Polignac number, because 11022232221 - 2²⁵ = 10988677789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11022232194 and 11022232203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022232223) 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 in 119 ways as a sum of consecutive naturals, for example, 1048825 + ... + 1059281.

Almost surely, 2^11022232221 is an apocalyptic number.

11022232221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11022232221 is an abundant number, since it is smaller than the sum of its proper divisors (11208631203).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11022232221 is a wasteful number, since it uses less digits than its factorization.

11022232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10513 (or 10491 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11022232221 its reverse (12223222011), we get a palindrome (23245454232).

The spelling of 11022232221 in words is "eleven billion, twenty-two million, two hundred thirty-two thousand, two hundred twenty-one".