2222002221 has 48 divisors (see below), whose sum is σ = 3319726080. Its totient is φ = 1319765760.

The previous prime is 2222002217. The next prime is 2222002241. The reversal of 2222002221 is 1222002222.

It is not a de Polignac number, because 2222002221 - 2² = 2222002217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2222002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222002201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1262340 + ... + 1264098.

It is an arithmetic number, because the mean of its divisors is an integer number (69160960).

Almost surely, 2^2222002221 is an apocalyptic number.

It is an amenable number.

2222002221 is a deficient number, since it is larger than the sum of its proper divisors (1097723859).

2222002221 is a wasteful number, since it uses less digits than its factorization.

2222002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2222002221 is about 47138.1185560052. The cubic root of 2222002221 is about 1304.9128151851.

Adding to 2222002221 its reverse (1222002222), we get a palindrome (3444004443).

Subtracting from 2222002221 its reverse (1222002222), we obtain a palindrome (999999999).

The spelling of 2222002221 in words is "two billion, two hundred twenty-two million, two thousand, two hundred twenty-one".