21220200013 has 8 divisors (see below), whose sum is σ = 21612650400. Its totient is φ = 20828842608.

The previous prime is 21220199927. The next prime is 21220200017. The reversal of 21220200013 is 31000202212.

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 21220200013 - 2⁹ = 21220199501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21220199966 and 21220200002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220200017) 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, 234006 + ... + 311767.

It is an arithmetic number, because the mean of its divisors is an integer number (2701581300).

Almost surely, 2^21220200013 is an apocalyptic number.

It is an amenable number.

21220200013 is a deficient number, since it is larger than the sum of its proper divisors (392450387).

21220200013 is an equidigital number, since it uses as much as digits as its factorization.

21220200013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546491.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21220200013 its reverse (31000202212), we get a palindrome (52220402225).

The spelling of 21220200013 in words is "twenty-one billion, two hundred twenty million, two hundred thousand, thirteen".