521052023330101 has 2 divisors, whose sum is σ = 521052023330102. Its totient is φ = 521052023330100.

The previous prime is 521052023329979. The next prime is 521052023330171. The reversal of 521052023330101 is 101033320250125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342745942533201 + 178306080796900 = 18513399^2 + 13353130^2 .

It is a cyclic number.

It is not a de Polignac number, because 521052023330101 - 2⁹ = 521052023329589 is a prime.

It is a super-2 number, since 2×521052023330101² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 521052023330101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521052023330171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260526011665050 + 260526011665051.

It is an arithmetic number, because the mean of its divisors is an integer number (260526011665051).

Almost surely, 2^{521052023330101} is an apocalyptic number.

It is an amenable number.

521052023330101 is a deficient number, since it is larger than the sum of its proper divisors (1).

521052023330101 is an equidigital number, since it uses as much as digits as its factorization.

521052023330101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 521052023330101 its reverse (101033320250125), we get a palindrome (622085343580226).

The spelling of 521052023330101 in words is "five hundred twenty-one trillion, fifty-two billion, twenty-three million, three hundred thirty thousand, one hundred one".