22013320421 has 8 divisors (see below), whose sum is σ = 22057299264. Its totient is φ = 21969367200.

The previous prime is 22013320411. The next prime is 22013320423. The reversal of 22013320421 is 12402331022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22013320421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22013320393 and 22013320402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013320423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3183650 + ... + 3190556.

It is an arithmetic number, because the mean of its divisors is an integer number (2757162408).

Almost surely, 2^22013320421 is an apocalyptic number.

It is an amenable number.

22013320421 is a deficient number, since it is larger than the sum of its proper divisors (43978843).

22013320421 is an equidigital number, since it uses as much as digits as its factorization.

22013320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22013320421 its reverse (12402331022), we get a palindrome (34415651443).

The spelling of 22013320421 in words is "twenty-two billion, thirteen million, three hundred twenty thousand, four hundred twenty-one".