10525535205221 has 2 divisors, whose sum is σ = 10525535205222. Its totient is φ = 10525535205220.

The previous prime is 10525535205209. The next prime is 10525535205233. The reversal of 10525535205221 is 12250253552501.

It is a balanced prime because it is at equal distance from previous prime (10525535205209) and next prime (10525535205233).

It can be written as a sum of positive squares in only one way, i.e., 10478233740100 + 47301465121 = 3237010^2 + 217489^2 .

It is a cyclic number.

It is not a de Polignac number, because 10525535205221 - 2¹⁴ = 10525535188837 is a prime.

It is a super-2 number, since 2×10525535205221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10525535705221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5262767602610 + 5262767602611.

It is an arithmetic number, because the mean of its divisors is an integer number (5262767602611).

Almost surely, 2^{10525535205221} is an apocalyptic number.

It is an amenable number.

10525535205221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10525535205221 is an equidigital number, since it uses as much as digits as its factorization.

10525535205221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150000, while the sum is 38.

Adding to 10525535205221 its reverse (12250253552501), we get a palindrome (22775788757722).

The spelling of 10525535205221 in words is "ten trillion, five hundred twenty-five billion, five hundred thirty-five million, two hundred five thousand, two hundred twenty-one".