214021 has 2 divisors, whose sum is σ = 214022. Its totient is φ = 214020.

The previous prime is 214009. The next prime is 214031. The reversal of 214021 is 120412.

It is an a-pointer prime, because the next prime (214031) can be obtained adding 214021 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148996 + 65025 = 386^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 214021 - 2⁵ = 213989 is a prime.

It is a Chen prime.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 213989 and 214007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107010 + 107011.

It is an arithmetic number, because the mean of its divisors is an integer number (107011).

2²¹⁴⁰²¹ is an apocalyptic number.

It is an amenable number.

214021 is a deficient number, since it is larger than the sum of its proper divisors (1).

214021 is an equidigital number, since it uses as much as digits as its factorization.

214021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 214021 is about 462.6240374213. The cubic root of 214021 is about 59.8161967738.

Adding to 214021 its reverse (120412), we get a palindrome (334433).

The spelling of 214021 in words is "two hundred fourteen thousand, twenty-one", and thus it is an iban number.