412012021 has 4 divisors (see below), whose sum is σ = 414169344. Its totient is φ = 409854700.

The previous prime is 412012009. The next prime is 412012039. The reversal of 412012021 is 120210214.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 412012021 - 2¹¹ = 412009973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 412011992 and 412012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412012001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078375 + ... + 1078756.

It is an arithmetic number, because the mean of its divisors is an integer number (103542336).

Almost surely, 2^412012021 is an apocalyptic number.

It is an amenable number.

412012021 is a deficient number, since it is larger than the sum of its proper divisors (2157323).

412012021 is a wasteful number, since it uses less digits than its factorization.

412012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157322.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 412012021 is about 20298.0792441058. The cubic root of 412012021 is about 744.1091229360.

Adding to 412012021 its reverse (120210214), we get a palindrome (532222235).

The spelling of 412012021 in words is "four hundred twelve million, twelve thousand, twenty-one".