214500421 has 2 divisors, whose sum is σ = 214500422. Its totient is φ = 214500420.

The previous prime is 214500401. The next prime is 214500427. The reversal of 214500421 is 124005412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177156100 + 37344321 = 13310^2 + 6111^2 .

It is a cyclic number.

It is not a de Polignac number, because 214500421 - 2¹¹ = 214498373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214500427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107250210 + 107250211.

It is an arithmetic number, because the mean of its divisors is an integer number (107250211).

Almost surely, 2^214500421 is an apocalyptic number.

It is an amenable number.

214500421 is a deficient number, since it is larger than the sum of its proper divisors (1).

214500421 is an equidigital number, since it uses as much as digits as its factorization.

214500421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 214500421 is about 14645.8328885728. The cubic root of 214500421 is about 598.6082752590.

Adding to 214500421 its reverse (124005412), we get a palindrome (338505833).

The spelling of 214500421 in words is "two hundred fourteen million, five hundred thousand, four hundred twenty-one".