214221243 has 4 divisors (see below), whose sum is σ = 285628328. Its totient is φ = 142814160.

The previous prime is 214221239. The next prime is 214221247. The reversal of 214221243 is 342122412.

214221243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (214221239) and next prime (214221247).

It is not a de Polignac number, because 214221243 - 2² = 214221239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214221247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35703538 + ... + 35703543.

It is an arithmetic number, because the mean of its divisors is an integer number (71407082).

Almost surely, 2^214221243 is an apocalyptic number.

214221243 is a deficient number, since it is larger than the sum of its proper divisors (71407085).

214221243 is an equidigital number, since it uses as much as digits as its factorization.

214221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71407084.

The product of its digits is 768, while the sum is 21.

The square root of 214221243 is about 14636.2988149327. The cubic root of 214221243 is about 598.3484609802.

Adding to 214221243 its reverse (342122412), we get a palindrome (556343655).

The spelling of 214221243 in words is "two hundred fourteen million, two hundred twenty-one thousand, two hundred forty-three".