11000220121221 has 8 divisors (see below), whose sum is σ = 14666983176864. Its totient is φ = 7333468573200.

The previous prime is 11000220121181. The next prime is 11000220121313. The reversal of 11000220121221 is 12212102200011.

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

It is not a de Polignac number, because 11000220121221 - 2⁹ = 11000220120709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11000220121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000220121621) 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, 322426 + ... + 4701531.

It is an arithmetic number, because the mean of its divisors is an integer number (1833372897108).

Almost surely, 2^{11000220121221} is an apocalyptic number.

It is an amenable number.

11000220121221 is a deficient number, since it is larger than the sum of its proper divisors (3666763055643).

11000220121221 is an equidigital number, since it uses as much as digits as its factorization.

11000220121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5753811.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11000220121221 its reverse (12212102200011), we get a palindrome (23212322321232).

The spelling of 11000220121221 in words is "eleven trillion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-one".