21220214213 has 8 divisors (see below), whose sum is σ = 23365674720. Its totient is φ = 19110812080.

The previous prime is 21220214117. The next prime is 21220214219. The reversal of 21220214213 is 31241202212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21220214213 - 2⁸ = 21220213957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220214219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9013358 + ... + 9015711.

It is an arithmetic number, because the mean of its divisors is an integer number (2920709340).

Almost surely, 2^21220214213 is an apocalyptic number.

It is an amenable number.

21220214213 is a deficient number, since it is larger than the sum of its proper divisors (2145460507).

21220214213 is a wasteful number, since it uses less digits than its factorization.

21220214213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18029187.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21220214213 its reverse (31241202212), we get a palindrome (52461416425).

The spelling of 21220214213 in words is "twenty-one billion, two hundred twenty million, two hundred fourteen thousand, two hundred thirteen".