11021112002221 has 4 divisors (see below), whose sum is σ = 11669412708252. Its totient is φ = 10372811296192.

The previous prime is 11021112002213. The next prime is 11021112002317. The reversal of 11021112002221 is 12220021112011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6260254202500 + 4760857799721 = 2502050^2 + 2181939^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021112002221 - 2³ = 11021112002213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021112002195 and 11021112002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021112002321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324150352990 + ... + 324150353023.

It is an arithmetic number, because the mean of its divisors is an integer number (2917353177063).

Almost surely, 2^{11021112002221} is an apocalyptic number.

It is an amenable number.

11021112002221 is a deficient number, since it is larger than the sum of its proper divisors (648300706031).

11021112002221 is an equidigital number, since it uses as much as digits as its factorization.

11021112002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648300706030.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11021112002221 its reverse (12220021112011), we get a palindrome (23241133114232).

The spelling of 11021112002221 in words is "eleven trillion, twenty-one billion, one hundred twelve million, two thousand, two hundred twenty-one".