214020221 has 4 divisors (see below), whose sum is σ = 223325472. Its totient is φ = 204714972.

The previous prime is 214020211. The next prime is 214020229. The reversal of 214020221 is 122020412.

214020221 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214020221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214020196 and 214020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214020229) 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, 4652591 + ... + 4652636.

It is an arithmetic number, because the mean of its divisors is an integer number (55831368).

Almost surely, 2^214020221 is an apocalyptic number.

It is an amenable number.

214020221 is a deficient number, since it is larger than the sum of its proper divisors (9305251).

214020221 is an equidigital number, since it uses as much as digits as its factorization.

214020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9305250.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 214020221 is about 14629.4299615535. The cubic root of 214020221 is about 598.1612420011.

Adding to 214020221 its reverse (122020412), we get a palindrome (336040633).

The spelling of 214020221 in words is "two hundred fourteen million, twenty thousand, two hundred twenty-one".