2254002221 has 2 divisors, whose sum is σ = 2254002222. Its totient is φ = 2254002220.

The previous prime is 2254002203. The next prime is 2254002229. The reversal of 2254002221 is 1222004522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2178555625 + 75446596 = 46675^2 + 8686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2254002221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2254002193 and 2254002202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2254002229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127001110 + 1127001111.

It is an arithmetic number, because the mean of its divisors is an integer number (1127001111).

Almost surely, 2^2254002221 is an apocalyptic number.

It is an amenable number.

2254002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2254002221 is an equidigital number, since it uses as much as digits as its factorization.

2254002221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2254002221 is about 47476.3332724843. Note that the first 3 decimals coincide. The cubic root of 2254002221 is about 1311.1471840195.

Adding to 2254002221 its reverse (1222004522), we get a palindrome (3476006743).

The spelling of 2254002221 in words is "two billion, two hundred fifty-four million, two thousand, two hundred twenty-one".