214016021 has 2 divisors, whose sum is σ = 214016022. Its totient is φ = 214016020.

The previous prime is 214016003. The next prime is 214016041. The reversal of 214016021 is 120610412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191822500 + 22193521 = 13850^2 + 4711^2 .

It is a cyclic number.

It is not a de Polignac number, because 214016021 - 2¹⁸ = 213753877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214016041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107008010 + 107008011.

It is an arithmetic number, because the mean of its divisors is an integer number (107008011).

Almost surely, 2^214016021 is an apocalyptic number.

It is an amenable number.

214016021 is a deficient number, since it is larger than the sum of its proper divisors (1).

214016021 is an equidigital number, since it uses as much as digits as its factorization.

214016021 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 17.

The square root of 214016021 is about 14629.2864145863. The cubic root of 214016021 is about 598.1573291408.

Adding to 214016021 its reverse (120610412), we get a palindrome (334626433).

The spelling of 214016021 in words is "two hundred fourteen million, sixteen thousand, twenty-one".