2290250021 has 2 divisors, whose sum is σ = 2290250022. Its totient is φ = 2290250020.

The previous prime is 2290250003. The next prime is 2290250033. The reversal of 2290250021 is 1200520922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2290101025 + 148996 = 47855^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2290250021 - 2⁶ = 2290249957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2290250051) 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 as a sum of consecutive naturals, namely, 1145125010 + 1145125011.

It is an arithmetic number, because the mean of its divisors is an integer number (1145125011).

Almost surely, 2^2290250021 is an apocalyptic number.

It is an amenable number.

2290250021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2290250021 is an equidigital number, since it uses as much as digits as its factorization.

2290250021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2290250021 is about 47856.5567190119. The cubic root of 2290250021 is about 1318.1382579128.

Adding to 2290250021 its reverse (1200520922), we get a palindrome (3490770943).

The spelling of 2290250021 in words is "two billion, two hundred ninety million, two hundred fifty thousand, twenty-one".