214213433221 has 4 divisors (see below), whose sum is σ = 216215428032. Its totient is φ = 212211438412.

The previous prime is 214213433201. The next prime is 214213433227. The reversal of 214213433221 is 122334312412.

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-214213433221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 214213433221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214213433227) 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, 1000997245 + ... + 1000997458.

It is an arithmetic number, because the mean of its divisors is an integer number (54053857008).

Almost surely, 2^214213433221 is an apocalyptic number.

It is an amenable number.

214213433221 is a deficient number, since it is larger than the sum of its proper divisors (2001994811).

214213433221 is a wasteful number, since it uses less digits than its factorization.

214213433221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001994810.

The product of its digits is 6912, while the sum is 28.

Adding to 214213433221 its reverse (122334312412), we get a palindrome (336547745633).

The spelling of 214213433221 in words is "two hundred fourteen billion, two hundred thirteen million, four hundred thirty-three thousand, two hundred twenty-one".