2211012205 has 8 divisors (see below), whose sum is σ = 2654253432. Its totient is φ = 1768117248.

The previous prime is 2211012203. The next prime is 2211012233. The reversal of 2211012205 is 5022101122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 272019049 + 1938993156 = 16493^2 + 44034^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2211012205 - 2¹ = 2211012203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211012203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72304 + ... + 98233.

It is an arithmetic number, because the mean of its divisors is an integer number (331781679).

Almost surely, 2^2211012205 is an apocalyptic number.

It is an amenable number.

2211012205 is a deficient number, since it is larger than the sum of its proper divisors (443241227).

2211012205 is a wasteful number, since it uses less digits than its factorization.

2211012205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173135.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2211012205 is about 47021.4015635434. The cubic root of 2211012205 is about 1302.7578936316.

Adding to 2211012205 its reverse (5022101122), we get a palindrome (7233113327).

The spelling of 2211012205 in words is "two billion, two hundred eleven million, twelve thousand, two hundred five".