2520341221 has 2 divisors, whose sum is σ = 2520341222. Its totient is φ = 2520341220.

The previous prime is 2520341177. The next prime is 2520341233. The reversal of 2520341221 is 1221430252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1945780321 + 574560900 = 44111^2 + 23970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2520341221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2520341192 and 2520341201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520342221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260170610 + 1260170611.

It is an arithmetic number, because the mean of its divisors is an integer number (1260170611).

Almost surely, 2^2520341221 is an apocalyptic number.

It is an amenable number.

2520341221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520341221 is an equidigital number, since it uses as much as digits as its factorization.

2520341221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2520341221 is about 50203.0001195148. Note that the first 3 decimals coincide. The cubic root of 2520341221 is about 1360.8798410302.

Adding to 2520341221 its reverse (1221430252), we get a palindrome (3741771473).

The spelling of 2520341221 in words is "two billion, five hundred twenty million, three hundred forty-one thousand, two hundred twenty-one".