112521281 has 2 divisors, whose sum is σ = 112521282. Its totient is φ = 112521280.

The previous prime is 112521259. The next prime is 112521349. The reversal of 112521281 is 182125211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60450625 + 52070656 = 7775^2 + 7216^2 .

It is a cyclic number.

It is not a de Polignac number, because 112521281 - 2¹⁸ = 112259137 is a prime.

It is a super-2 number, since 2×112521281² = 25322077355761922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (112520281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56260640 + 56260641.

It is an arithmetic number, because the mean of its divisors is an integer number (56260641).

Almost surely, 2^112521281 is an apocalyptic number.

It is an amenable number.

112521281 is a deficient number, since it is larger than the sum of its proper divisors (1).

112521281 is an equidigital number, since it uses as much as digits as its factorization.

112521281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 23.

The square root of 112521281 is about 10607.6048663211. The cubic root of 112521281 is about 482.7751297608.

Adding to 112521281 its reverse (182125211), we get a palindrome (294646492).

The spelling of 112521281 in words is "one hundred twelve million, five hundred twenty-one thousand, two hundred eighty-one".