11011210221 has 16 divisors (see below), whose sum is σ = 16018263360. Its totient is φ = 6672645120.

The previous prime is 11011210213. The next prime is 11011210237. The reversal of 11011210221 is 12201211011.

It is not a de Polignac number, because 11011210221 - 2³ = 11011210213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011210197 and 11011210206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011210241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359131 + ... + 388583.

It is an arithmetic number, because the mean of its divisors is an integer number (1001141460).

Almost surely, 2^11011210221 is an apocalyptic number.

11011210221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11011210221 is a deficient number, since it is larger than the sum of its proper divisors (5007053139).

11011210221 is a wasteful number, since it uses less digits than its factorization.

11011210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40796.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11011210221 its reverse (12201211011), we get a palindrome (23212421232).

The spelling of 11011210221 in words is "eleven billion, eleven million, two hundred ten thousand, two hundred twenty-one".