2221002211 has 4 divisors (see below), whose sum is σ = 2221110000. Its totient is φ = 2220894424.

The previous prime is 2221002197. The next prime is 2221002233. The reversal of 2221002211 is 1122001222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1122001222 = 2 ⋅561000611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221002211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221002191 and 2221002200.

It is not an unprimeable number, because it can be changed into a prime (2221002271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12271 + ... + 67768.

It is an arithmetic number, because the mean of its divisors is an integer number (555277500).

Almost surely, 2^2221002211 is an apocalyptic number.

2221002211 is a deficient number, since it is larger than the sum of its proper divisors (107789).

2221002211 is an equidigital number, since it uses as much as digits as its factorization.

2221002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107788.

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

The square root of 2221002211 is about 47127.5101294350. The cubic root of 2221002211 is about 1304.7170275510.

Adding to 2221002211 its reverse (1122001222), we get a palindrome (3343003433).

The spelling of 2221002211 in words is "two billion, two hundred twenty-one million, two thousand, two hundred eleven".