2201122221 has 8 divisors (see below), whose sum is σ = 2935046400. Its totient is φ = 1467306432.

The previous prime is 2201122219. The next prime is 2201122229. The reversal of 2201122221 is 1222211022.

2201122221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2201122221 - 2¹ = 2201122219 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2201122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201122229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65301 + ... + 93093.

It is an arithmetic number, because the mean of its divisors is an integer number (366880800).

Almost surely, 2^2201122221 is an apocalyptic number.

It is an amenable number.

2201122221 is a deficient number, since it is larger than the sum of its proper divisors (733924179).

2201122221 is a wasteful number, since it uses less digits than its factorization.

2201122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54195.

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

The square root of 2201122221 is about 46916.1189891065. The cubic root of 2201122221 is about 1300.8125533562.

Adding to 2201122221 its reverse (1222211022), we get a palindrome (3423333243).

The spelling of 2201122221 in words is "two billion, two hundred one million, one hundred twenty-two thousand, two hundred twenty-one".