341221021 has 2 divisors, whose sum is σ = 341221022. Its totient is φ = 341221020.

The previous prime is 341221003. The next prime is 341221033. The reversal of 341221021 is 120122143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181198521 + 160022500 = 13461^2 + 12650^2 .

It is a cyclic number.

It is not a de Polignac number, because 341221021 - 2¹¹ = 341218973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 341220986 and 341221004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (341221421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170610510 + 170610511.

It is an arithmetic number, because the mean of its divisors is an integer number (170610511).

Almost surely, 2^341221021 is an apocalyptic number.

It is an amenable number.

341221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

341221021 is an equidigital number, since it uses as much as digits as its factorization.

341221021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 341221021 is about 18472.1688223121. The cubic root of 341221021 is about 698.7877119270.

Adding to 341221021 its reverse (120122143), we get a palindrome (461343164).

The spelling of 341221021 in words is "three hundred forty-one million, two hundred twenty-one thousand, twenty-one".