2220200111221 has 4 divisors (see below), whose sum is σ = 2221936000000. Its totient is φ = 2218464222444.

The previous prime is 2220200111203. The next prime is 2220200111243. The reversal of 2220200111221 is 1221110020222.

It is a happy number.

2220200111221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2220200111221 - 2⁷ = 2220200111093 is a prime.

It is a super-2 number, since 2×2220200111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220200111195 and 2220200111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220200111621) 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, 867942471 + ... + 867945028.

It is an arithmetic number, because the mean of its divisors is an integer number (555484000000).

Almost surely, 2^{2220200111221} is an apocalyptic number.

It is an amenable number.

2220200111221 is a deficient number, since it is larger than the sum of its proper divisors (1735888779).

2220200111221 is a wasteful number, since it uses less digits than its factorization.

2220200111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735888778.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2220200111221 its reverse (1221110020222), we get a palindrome (3441310131443).

Subtracting from 2220200111221 its reverse (1221110020222), we obtain a palindrome (999090090999).

The spelling of 2220200111221 in words is "two trillion, two hundred twenty billion, two hundred million, one hundred eleven thousand, two hundred twenty-one".