2207002221 has 10 divisors (see below), whose sum is σ = 3296879982. Its totient is φ = 1471334760.

The previous prime is 2207002199. The next prime is 2207002261. The reversal of 2207002221 is 1222007022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2144986596 + 62015625 = 46314^2 + 7875^2 .

It is not a de Polignac number, because 2207002221 - 2¹³ = 2206994029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2207002194 and 2207002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2207002261) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13623390 + ... + 13623551.

Almost surely, 2^2207002221 is an apocalyptic number.

It is an amenable number.

2207002221 is a deficient number, since it is larger than the sum of its proper divisors (1089877761).

2207002221 is an equidigital number, since it uses as much as digits as its factorization.

2207002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27246953 (or 27246944 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2207002221 is about 46978.7422245424. The cubic root of 2207002221 is about 1301.9698383295.

Adding to 2207002221 its reverse (1222007022), we get a palindrome (3429009243).

The spelling of 2207002221 in words is "two billion, two hundred seven million, two thousand, two hundred twenty-one".