2450221117 has 2 divisors, whose sum is σ = 2450221118. Its totient is φ = 2450221116.

The previous prime is 2450221091. The next prime is 2450221127. The reversal of 2450221117 is 7111220542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1389351076 + 1060870041 = 37274^2 + 32571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2450221117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2450221091 and 2450221100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2450221127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1225110558 + 1225110559.

It is an arithmetic number, because the mean of its divisors is an integer number (1225110559).

Almost surely, 2^2450221117 is an apocalyptic number.

It is an amenable number.

2450221117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2450221117 is an equidigital number, since it uses as much as digits as its factorization.

2450221117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2450221117 is about 49499.7082516655. The cubic root of 2450221117 is about 1348.1403048274.

Adding to 2450221117 its reverse (7111220542), we get a palindrome (9561441659).

The spelling of 2450221117 in words is "two billion, four hundred fifty million, two hundred twenty-one thousand, one hundred seventeen".