214244021 has 2 divisors, whose sum is σ = 214244022. Its totient is φ = 214244020.

The previous prime is 214243993. The next prime is 214244033. The reversal of 214244021 is 120442412.

214244021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182547121 + 31696900 = 13511^2 + 5630^2 .

It is a cyclic number.

It is not a de Polignac number, because 214244021 - 2¹⁸ = 213981877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214243984 and 214244002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214244221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107122010 + 107122011.

It is an arithmetic number, because the mean of its divisors is an integer number (107122011).

Almost surely, 2^214244021 is an apocalyptic number.

It is an amenable number.

214244021 is a deficient number, since it is larger than the sum of its proper divisors (1).

214244021 is an equidigital number, since it uses as much as digits as its factorization.

214244021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 214244021 is about 14637.0769281302. The cubic root of 214244021 is about 598.3696675578.

Adding to 214244021 its reverse (120442412), we get a palindrome (334686433).

The spelling of 214244021 in words is "two hundred fourteen million, two hundred forty-four thousand, twenty-one".