113221442287 has 2 divisors, whose sum is σ = 113221442288. Its totient is φ = 113221442286.

The previous prime is 113221442233. The next prime is 113221442311. The reversal of 113221442287 is 782244122311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113221442287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113221443287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610721143 + 56610721144.

It is an arithmetic number, because the mean of its divisors is an integer number (56610721144).

Almost surely, 2^113221442287 is an apocalyptic number.

113221442287 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221442287 is an equidigital number, since it uses as much as digits as its factorization.

113221442287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 37.

Adding to 113221442287 its reverse (782244122311), we get a palindrome (895465564598).

The spelling of 113221442287 in words is "one hundred thirteen billion, two hundred twenty-one million, four hundred forty-two thousand, two hundred eighty-seven".