2201221212 has 24 divisors (see below), whose sum is σ = 5406508800. Its totient is φ = 695122416.

The previous prime is 2201221207. The next prime is 2201221223. The reversal of 2201221212 is 2121221022.

2201221212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2201221191 and 2201221200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4827012 + ... + 4827467.

It is an arithmetic number, because the mean of its divisors is an integer number (225271200).

Almost surely, 2^2201221212 is an apocalyptic number.

It is an amenable number.

2201221212 is an abundant number, since it is smaller than the sum of its proper divisors (3205287588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2201221212 is a wasteful number, since it uses less digits than its factorization.

2201221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9654505 (or 9654503 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2201221212 is about 46917.1739558128. The cubic root of 2201221212 is about 1300.8320535312.

Adding to 2201221212 its reverse (2121221022), we get a palindrome (4322442234).

The spelling of 2201221212 in words is "two billion, two hundred one million, two hundred twenty-one thousand, two hundred twelve".