21421224301 has 8 divisors (see below), whose sum is σ = 21922408640. Its totient is φ = 20920177152.

The previous prime is 21421224277. The next prime is 21421224311. The reversal of 21421224301 is 10342212412.

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 21421224301 - 2¹⁷ = 21421093229 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 (21421224311) 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, 325165 + ... + 385453.

It is an arithmetic number, because the mean of its divisors is an integer number (2740301080).

Almost surely, 2^21421224301 is an apocalyptic number.

It is an amenable number.

21421224301 is a deficient number, since it is larger than the sum of its proper divisors (501184339).

21421224301 is an equidigital number, since it uses as much as digits as its factorization.

21421224301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68595.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21421224301 its reverse (10342212412), we get a palindrome (31763436713).

The spelling of 21421224301 in words is "twenty-one billion, four hundred twenty-one million, two hundred twenty-four thousand, three hundred one".