421339211 has 2 divisors, whose sum is σ = 421339212. Its totient is φ = 421339210.

The previous prime is 421339207. The next prime is 421339213. The reversal of 421339211 is 112933124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421339211 - 2² = 421339207 is a prime.

It is a super-2 number, since 2×421339211² = 355053461452205042, which contains 22 as substring.

Together with 421339213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421339213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210669605 + 210669606.

It is an arithmetic number, because the mean of its divisors is an integer number (210669606).

Almost surely, 2^421339211 is an apocalyptic number.

421339211 is a deficient number, since it is larger than the sum of its proper divisors (1).

421339211 is an equidigital number, since it uses as much as digits as its factorization.

421339211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 421339211 is about 20526.5489305923. The cubic root of 421339211 is about 749.6823609003.

The spelling of 421339211 in words is "four hundred twenty-one million, three hundred thirty-nine thousand, two hundred eleven".