11101020221 has 8 divisors (see below), whose sum is σ = 11228544000. Its totient is φ = 10974010432.

The previous prime is 11101020211. The next prime is 11101020241. The reversal of 11101020221 is 12202010111.

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 11101020221 - 2¹⁰ = 11101019197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101020211) 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, 84971 + ... + 171528.

It is an arithmetic number, because the mean of its divisors is an integer number (1403568000).

Almost surely, 2^11101020221 is an apocalyptic number.

It is an amenable number.

11101020221 is a deficient number, since it is larger than the sum of its proper divisors (127523779).

11101020221 is a wasteful number, since it uses less digits than its factorization.

11101020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256995.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11101020221 its reverse (12202010111), we get a palindrome (23303030332).

The spelling of 11101020221 in words is "eleven billion, one hundred one million, twenty thousand, two hundred twenty-one".