11102220021221 has 8 divisors (see below), whose sum is σ = 12927652424064. Its totient is φ = 9336637861200.

The previous prime is 11102220021209. The next prime is 11102220021229. The reversal of 11102220021221 is 12212002220111.

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 11102220021221 - 2³⁰ = 11101146279397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11102220021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102220021229) 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, 14962560305 + ... + 14962561046.

It is an arithmetic number, because the mean of its divisors is an integer number (1615956553008).

Almost surely, 2^{11102220021221} is an apocalyptic number.

It is an amenable number.

11102220021221 is a deficient number, since it is larger than the sum of its proper divisors (1825432402843).

11102220021221 is an equidigital number, since it uses as much as digits as its factorization.

11102220021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29925121411.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11102220021221 its reverse (12212002220111), we get a palindrome (23314222241332).

The spelling of 11102220021221 in words is "eleven trillion, one hundred two billion, two hundred twenty million, twenty-one thousand, two hundred twenty-one".