2201232221 has 16 divisors (see below), whose sum is σ = 2354626560. Its totient is φ = 2054248560.

The previous prime is 2201232193. The next prime is 2201232223. The reversal of 2201232221 is 1222321022.

It is a cyclic number.

It is not a de Polignac number, because 2201232221 - 2²² = 2197037917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2201232221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201232223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94856 + ... + 115758.

It is an arithmetic number, because the mean of its divisors is an integer number (147164160).

Almost surely, 2^2201232221 is an apocalyptic number.

It is an amenable number.

2201232221 is a deficient number, since it is larger than the sum of its proper divisors (153394339).

2201232221 is a wasteful number, since it uses less digits than its factorization.

2201232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21056.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2201232221 is about 46917.2912794420. The cubic root of 2201232221 is about 1300.8342221510.

Adding to 2201232221 its reverse (1222321022), we get a palindrome (3423553243).

The spelling of 2201232221 in words is "two billion, two hundred one million, two hundred thirty-two thousand, two hundred twenty-one".