421101211 has 2 divisors, whose sum is σ = 421101212. Its totient is φ = 421101210.

The previous prime is 421101137. The next prime is 421101221. The reversal of 421101211 is 112101124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421101211 - 2¹³ = 421093019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421101191 and 421101200.

It is not a weakly prime, because it can be changed into another prime (421101221) 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 as a sum of consecutive naturals, namely, 210550605 + 210550606.

It is an arithmetic number, because the mean of its divisors is an integer number (210550606).

Almost surely, 2^421101211 is an apocalyptic number.

421101211 is a deficient number, since it is larger than the sum of its proper divisors (1).

421101211 is an equidigital number, since it uses as much as digits as its factorization.

421101211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 421101211 is about 20520.7507416274. The cubic root of 421101211 is about 749.5411777371.

Adding to 421101211 its reverse (112101124), we get a palindrome (533202335).

The spelling of 421101211 in words is "four hundred twenty-one million, one hundred one thousand, two hundred eleven".