212014221 has 4 divisors (see below), whose sum is σ = 282685632. Its totient is φ = 141342812.

The previous prime is 212014211. The next prime is 212014237. The reversal of 212014221 is 122410212.

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 not a de Polignac number, because 212014221 - 2⁵ = 212014189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212014221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212014211) 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, 35335701 + ... + 35335706.

It is an arithmetic number, because the mean of its divisors is an integer number (70671408).

Almost surely, 2^212014221 is an apocalyptic number.

It is an amenable number.

212014221 is a deficient number, since it is larger than the sum of its proper divisors (70671411).

212014221 is an equidigital number, since it uses as much as digits as its factorization.

212014221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70671410.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 212014221 is about 14560.7081215166. The cubic root of 212014221 is about 596.2865281824.

Adding to 212014221 its reverse (122410212), we get a palindrome (334424433).

The spelling of 212014221 in words is "two hundred twelve million, fourteen thousand, two hundred twenty-one".