105525334021 has 2 divisors, whose sum is σ = 105525334022. Its totient is φ = 105525334020.

The previous prime is 105525333989. The next prime is 105525334027. The reversal of 105525334021 is 120433525501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76335611521 + 29189722500 = 276289^2 + 170850^2 .

It is a cyclic number.

It is not a de Polignac number, because 105525334021 - 2⁵ = 105525333989 is a prime.

It is a super-2 number, since 2×105525334021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105525334027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52762667010 + 52762667011.

It is an arithmetic number, because the mean of its divisors is an integer number (52762667011).

Almost surely, 2^105525334021 is an apocalyptic number.

It is an amenable number.

105525334021 is a deficient number, since it is larger than the sum of its proper divisors (1).

105525334021 is an equidigital number, since it uses as much as digits as its factorization.

105525334021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 105525334021 its reverse (120433525501), we get a palindrome (225958859522).

The spelling of 105525334021 in words is "one hundred five billion, five hundred twenty-five million, three hundred thirty-four thousand, twenty-one".