520422050221 has 2 divisors, whose sum is σ = 520422050222. Its totient is φ = 520422050220.

The previous prime is 520422050207. The next prime is 520422050287. The reversal of 520422050221 is 122050224025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269034129225 + 251387920996 = 518685^2 + 501386^2 .

It is a cyclic number.

It is not a de Polignac number, because 520422050221 - 2¹⁹ = 520421525933 is a prime.

It is a super-2 number, since 2×520422050221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520422000221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260211025110 + 260211025111.

It is an arithmetic number, because the mean of its divisors is an integer number (260211025111).

Almost surely, 2^520422050221 is an apocalyptic number.

It is an amenable number.

520422050221 is a deficient number, since it is larger than the sum of its proper divisors (1).

520422050221 is an equidigital number, since it uses as much as digits as its factorization.

520422050221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 520422050221 its reverse (122050224025), we get a palindrome (642472274246).

The spelling of 520422050221 in words is "five hundred twenty billion, four hundred twenty-two million, fifty thousand, two hundred twenty-one".