2201112202221 has 12 divisors (see below), whose sum is σ = 3210863345820. Its totient is φ = 1452879340800.

The previous prime is 2201112202187. The next prime is 2201112202241. The reversal of 2201112202221 is 1222022111022.

It is a happy number.

2201112202221 is a `hidden beast` number, since 220 + 1 + 1 + 1 + 220 + 2 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1091734509321 + 1109377692900 = 1044861^2 + 1053270^2 .

It is not a de Polignac number, because 2201112202221 - 2¹¹ = 2201112200173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201112202194 and 2201112202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201112202241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1210731876 + ... + 1210733693.

It is an arithmetic number, because the mean of its divisors is an integer number (267571945485).

Almost surely, 2^{2201112202221} is an apocalyptic number.

It is an amenable number.

2201112202221 is a deficient number, since it is larger than the sum of its proper divisors (1009751143599).

2201112202221 is a wasteful number, since it uses less digits than its factorization.

2201112202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421465676 (or 2421465673 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2201112202221 its reverse (1222022111022), we get a palindrome (3423134313243).

The spelling of 2201112202221 in words is "two trillion, two hundred one billion, one hundred twelve million, two hundred two thousand, two hundred twenty-one".