112421521 has 2 divisors, whose sum is σ = 112421522. Its totient is φ = 112421520.

The previous prime is 112421501. The next prime is 112421557. The reversal of 112421521 is 125124211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82609921 + 29811600 = 9089^2 + 5460^2 .

It is an emirp because it is prime and its reverse (125124211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 112421521 - 2⁵ = 112421489 is a prime.

It is not a weakly prime, because it can be changed into another prime (112421501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56210760 + 56210761.

It is an arithmetic number, because the mean of its divisors is an integer number (56210761).

Almost surely, 2^112421521 is an apocalyptic number.

It is an amenable number.

112421521 is a deficient number, since it is larger than the sum of its proper divisors (1).

112421521 is an equidigital number, since it uses as much as digits as its factorization.

112421521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160, while the sum is 19.

The square root of 112421521 is about 10602.9015368436. The cubic root of 112421521 is about 482.6324133884.

Adding to 112421521 its reverse (125124211), we get a palindrome (237545732).

The spelling of 112421521 in words is "one hundred twelve million, four hundred twenty-one thousand, five hundred twenty-one".