112345621 has 2 divisors, whose sum is σ = 112345622. Its totient is φ = 112345620.

The previous prime is 112345619. The next prime is 112345687. The reversal of 112345621 is 126543211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73719396 + 38626225 = 8586^2 + 6215^2 .

It is a cyclic number.

It is not a de Polignac number, because 112345621 - 2¹ = 112345619 is a prime.

Together with 112345619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112345601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56172810 + 56172811.

It is an arithmetic number, because the mean of its divisors is an integer number (56172811).

Almost surely, 2^112345621 is an apocalyptic number.

It is an amenable number.

112345621 is a deficient number, since it is larger than the sum of its proper divisors (1).

112345621 is an equidigital number, since it uses as much as digits as its factorization.

112345621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 112345621 is about 10599.3217235821. The cubic root of 112345621 is about 482.5237745004.

Adding to 112345621 its reverse (126543211), we get a palindrome (238888832).

The spelling of 112345621 in words is "one hundred twelve million, three hundred forty-five thousand, six hundred twenty-one".