341216021 has 4 divisors (see below), whose sum is σ = 342050700. Its totient is φ = 340381344.

The previous prime is 341215999. The next prime is 341216023. The reversal of 341216021 is 120612143.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 279357796 + 61858225 = 16714^2 + 7865^2 .

It is a cyclic number.

It is not a de Polignac number, because 341216021 - 2⁶ = 341215957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 341215984 and 341216002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (341216023) 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 in 3 ways as a sum of consecutive naturals, for example, 416726 + ... + 417543.

It is an arithmetic number, because the mean of its divisors is an integer number (85512675).

Almost surely, 2^341216021 is an apocalyptic number.

It is an amenable number.

341216021 is a deficient number, since it is larger than the sum of its proper divisors (834679).

341216021 is an equidigital number, since it uses as much as digits as its factorization.

341216021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834678.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 341216021 is about 18472.0334830792. The cubic root of 341216021 is about 698.7842987379.

Adding to 341216021 its reverse (120612143), we get a palindrome (461828164).

The spelling of 341216021 in words is "three hundred forty-one million, two hundred sixteen thousand, twenty-one".