11102011221 has 32 divisors (see below), whose sum is σ = 17002467328. Its totient is φ = 6312168000.

The previous prime is 11102011213. The next prime is 11102011247. The reversal of 11102011221 is 12211020111.

It is not a de Polignac number, because 11102011221 - 2³ = 11102011213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11102011197 and 11102011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102011021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4840551 + ... + 4842843.

It is an arithmetic number, because the mean of its divisors is an integer number (531327104).

Almost surely, 2^11102011221 is an apocalyptic number.

It is an amenable number.

11102011221 is a deficient number, since it is larger than the sum of its proper divisors (5900456107).

11102011221 is a wasteful number, since it uses less digits than its factorization.

11102011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361.

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

Adding to 11102011221 its reverse (12211020111), we get a palindrome (23313031332).

The spelling of 11102011221 in words is "eleven billion, one hundred two million, eleven thousand, two hundred twenty-one".