2201221012 has 12 divisors (see below), whose sum is σ = 3876673780. Its totient is φ = 1093599936.

The previous prime is 2201220971. The next prime is 2201221019. The reversal of 2201221012 is 2101221022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 947777796 + 1253443216 = 30786^2 + 35404^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2201220983 and 2201221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201221019) 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 3 ways as a sum of consecutive naturals, for example, 1751937 + ... + 1753192.

Almost surely, 2^2201221012 is an apocalyptic number.

It is an amenable number.

2201221012 is a deficient number, since it is larger than the sum of its proper divisors (1675452768).

2201221012 is a wasteful number, since it uses less digits than its factorization.

2201221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505290 (or 3505288 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2201221012 is about 46917.1718243971. The cubic root of 2201221012 is about 1300.8320141339.

Adding to 2201221012 its reverse (2101221022), we get a palindrome (4302442034).

The spelling of 2201221012 in words is "two billion, two hundred one million, two hundred twenty-one thousand, twelve".