113345105521 has 2 divisors, whose sum is σ = 113345105522. Its totient is φ = 113345105520.

The previous prime is 113345105437. The next prime is 113345105543. The reversal of 113345105521 is 125501543311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113218790400 + 126315121 = 336480^2 + 11239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113345105521 is a prime.

It is a super-2 number, since 2×113345105521² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113345105561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56672552760 + 56672552761.

It is an arithmetic number, because the mean of its divisors is an integer number (56672552761).

Almost surely, 2^113345105521 is an apocalyptic number.

It is an amenable number.

113345105521 is a deficient number, since it is larger than the sum of its proper divisors (1).

113345105521 is an equidigital number, since it uses as much as digits as its factorization.

113345105521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 113345105521 its reverse (125501543311), we get a palindrome (238846648832).

The spelling of 113345105521 in words is "one hundred thirteen billion, three hundred forty-five million, one hundred five thousand, five hundred twenty-one".