113345252221 has 2 divisors, whose sum is σ = 113345252222. Its totient is φ = 113345252220.

The previous prime is 113345252197. The next prime is 113345252231. The reversal of 113345252221 is 122252543311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108034486596 + 5310765625 = 328686^2 + 72875^2 .

It is a cyclic number.

It is not a de Polignac number, because 113345252221 - 2²³ = 113336863613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113345252231) 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, 56672626110 + 56672626111.

It is an arithmetic number, because the mean of its divisors is an integer number (56672626111).

Almost surely, 2^113345252221 is an apocalyptic number.

It is an amenable number.

113345252221 is a deficient number, since it is larger than the sum of its proper divisors (1).

113345252221 is an equidigital number, since it uses as much as digits as its factorization.

113345252221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

Adding to 113345252221 its reverse (122252543311), we get a palindrome (235597795532).

The spelling of 113345252221 in words is "one hundred thirteen billion, three hundred forty-five million, two hundred fifty-two thousand, two hundred twenty-one".