2200211111221 has 4 divisors (see below), whose sum is σ = 2329635294252. Its totient is φ = 2070786928192.

The previous prime is 2200211111213. The next prime is 2200211111243. The reversal of 2200211111221 is 1221111120022.

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 1648925651025 + 551285460196 = 1284105^2 + 742486^2 .

It is not a de Polignac number, because 2200211111221 - 2³ = 2200211111213 is a prime.

It is a super-4 number, since 4×2200211111221⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2200211111195 and 2200211111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200211111321) 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, 64712091490 + ... + 64712091523.

It is an arithmetic number, because the mean of its divisors is an integer number (582408823563).

Almost surely, 2^{2200211111221} is an apocalyptic number.

It is an amenable number.

2200211111221 is a deficient number, since it is larger than the sum of its proper divisors (129424183031).

2200211111221 is a wasteful number, since it uses less digits than its factorization.

2200211111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129424183030.

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

Adding to 2200211111221 its reverse (1221111120022), we get a palindrome (3421322231243).

The spelling of 2200211111221 in words is "two trillion, two hundred billion, two hundred eleven million, one hundred eleven thousand, two hundred twenty-one".