11012233221 has 24 divisors (see below), whose sum is σ = 17756165856. Its totient is φ = 6518867040.

The previous prime is 11012233213. The next prime is 11012233229. The reversal of 11012233221 is 12233221011.

It is an interprime number because it is at equal distance from previous prime (11012233213) and next prime (11012233229).

It is not a de Polignac number, because 11012233221 - 2³ = 11012233213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11012233194 and 11012233203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012233229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1289170 + ... + 1297683.

It is an arithmetic number, because the mean of its divisors is an integer number (739840244).

Almost surely, 2^11012233221 is an apocalyptic number.

11012233221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012233221 is a deficient number, since it is larger than the sum of its proper divisors (6743932635).

11012233221 is a wasteful number, since it uses less digits than its factorization.

11012233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586913 (or 2586910 counting only the distinct ones).

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

Adding to 11012233221 its reverse (12233221011), we get a palindrome (23245454232).

It can be divided in two parts, 1101 and 2233221, that added together give a palindrome (2234322).

The spelling of 11012233221 in words is "eleven billion, twelve million, two hundred thirty-three thousand, two hundred twenty-one".