11021110211221 has 8 divisors (see below), whose sum is σ = 12027237626304. Its totient is φ = 10015684180320.

The previous prime is 11021110211201. The next prime is 11021110211231. The reversal of 11021110211221 is 12211201112011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11021110211221 - 2⁹ = 11021110210709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021110211195 and 11021110211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021110211201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175313185 + ... + 175376038.

It is an arithmetic number, because the mean of its divisors is an integer number (1503404703288).

Almost surely, 2^{11021110211221} is an apocalyptic number.

11021110211221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11021110211221 is a deficient number, since it is larger than the sum of its proper divisors (1006127415083).

11021110211221 is a wasteful number, since it uses less digits than its factorization.

11021110211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350692091.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11021110211221 its reverse (12211201112011), we get a palindrome (23232311323232).

The spelling of 11021110211221 in words is "eleven trillion, twenty-one billion, one hundred ten million, two hundred eleven thousand, two hundred twenty-one".