21421430301 has 8 divisors (see below), whose sum is σ = 28568674624. Its totient is φ = 14277569760.

The previous prime is 21421430299. The next prime is 21421430341. The reversal of 21421430301 is 10303412412.

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

It is not a de Polignac number, because 21421430301 - 2¹ = 21421430299 is a prime.

It is a super-2 number, since 2×21421430301² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21421430341) 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, 831136 + ... + 856521.

It is an arithmetic number, because the mean of its divisors is an integer number (3571084328).

Almost surely, 2^21421430301 is an apocalyptic number.

It is an amenable number.

21421430301 is a deficient number, since it is larger than the sum of its proper divisors (7147244323).

21421430301 is a wasteful number, since it uses less digits than its factorization.

21421430301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691891.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21421430301 its reverse (10303412412), we get a palindrome (31724842713).

The spelling of 21421430301 in words is "twenty-one billion, four hundred twenty-one million, four hundred thirty thousand, three hundred one".