2231201205 has 24 divisors (see below), whose sum is σ = 3868999992. Its totient is φ = 1189486464.

The previous prime is 2231201197. The next prime is 2231201207. The reversal of 2231201205 is 5021021322.

It can be written as a sum of positive squares in 4 ways, for example, as 111703761 + 2119497444 = 10569^2 + 46038^2 .

It is not a de Polignac number, because 2231201205 - 2³ = 2231201197 is a prime.

It is a super-3 number, since 3×2231201205³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231201207) 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 23 ways as a sum of consecutive naturals, for example, 118927 + ... + 136403.

It is an arithmetic number, because the mean of its divisors is an integer number (161208333).

Almost surely, 2^2231201205 is an apocalyptic number.

It is an amenable number.

2231201205 is a deficient number, since it is larger than the sum of its proper divisors (1637798787).

2231201205 is a wasteful number, since it uses less digits than its factorization.

2231201205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20325 (or 20322 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2231201205 is about 47235.5925653527. The cubic root of 2231201205 is about 1306.7110949581.

Adding to 2231201205 its reverse (5021021322), we get a palindrome (7252222527).

The spelling of 2231201205 in words is "two billion, two hundred thirty-one million, two hundred one thousand, two hundred five".