11022331221 has 48 divisors (see below), whose sum is σ = 17554942080. Its totient is φ = 6608880000.

The previous prime is 11022331219. The next prime is 11022331231. The reversal of 11022331221 is 12213322011.

11022331221 is a `hidden beast` number, since 110 + 2 + 2 + 331 + 221 = 666.

It is not a de Polignac number, because 11022331221 - 2¹ = 11022331219 is a prime.

It is a super-3 number, since 3×11022331221³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11022331194 and 11022331203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022331231) 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 47 ways as a sum of consecutive naturals, for example, 4019911 + ... + 4022651.

It is an arithmetic number, because the mean of its divisors is an integer number (365727960).

Almost surely, 2^11022331221 is an apocalyptic number.

11022331221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11022331221 is a deficient number, since it is larger than the sum of its proper divisors (6532610859).

11022331221 is a wasteful number, since it uses less digits than its factorization.

11022331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178 (or 3175 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11022331221 its reverse (12213322011), we get a palindrome (23235653232).

It can be divided in two parts, 11022 and 331221, that added together give a palindrome (342243).

The spelling of 11022331221 in words is "eleven billion, twenty-two million, three hundred thirty-one thousand, two hundred twenty-one".