412331021 has 2 divisors, whose sum is σ = 412331022. Its totient is φ = 412331020.

The previous prime is 412330979. The next prime is 412331041. The reversal of 412331021 is 120133214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370986121 + 41344900 = 19261^2 + 6430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-412331021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (412331041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206165510 + 206165511.

It is an arithmetic number, because the mean of its divisors is an integer number (206165511).

Almost surely, 2^412331021 is an apocalyptic number.

It is an amenable number.

412331021 is a deficient number, since it is larger than the sum of its proper divisors (1).

412331021 is an equidigital number, since it uses as much as digits as its factorization.

412331021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 412331021 is about 20305.9356100624. The cubic root of 412331021 is about 744.3011153723.

Adding to 412331021 its reverse (120133214), we get a palindrome (532464235).

The spelling of 412331021 in words is "four hundred twelve million, three hundred thirty-one thousand, twenty-one".