113221211251 has 2 divisors, whose sum is σ = 113221211252. Its totient is φ = 113221211250.

The previous prime is 113221211239. The next prime is 113221211339. The reversal of 113221211251 is 152112122311.

It is a weak prime.

It is an emirp because it is prime and its reverse (152112122311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113221211251 - 2⁵ = 113221211219 is a prime.

It is not a weakly prime, because it can be changed into another prime (113221211221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610605625 + 56610605626.

It is an arithmetic number, because the mean of its divisors is an integer number (56610605626).

Almost surely, 2^113221211251 is an apocalyptic number.

113221211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221211251 is an equidigital number, since it uses as much as digits as its factorization.

113221211251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 22.

Adding to 113221211251 its reverse (152112122311), we get a palindrome (265333333562).

The spelling of 113221211251 in words is "one hundred thirteen billion, two hundred twenty-one million, two hundred eleven thousand, two hundred fifty-one".